Old scans give two staff groups instead of three

[mm3509]

Describe the bug

I tested the code on an old scan and the results are problematic, for example two staff line groups instead of three. Are there settings that work well with old scans?

Input Image

Full Traceback

The command produces no errors per se, but here is the image from the transcription:

and here is the .musicxml file output:

Click me

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 4.0 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
<score-partwise version="4.0">
  <work>
    <work-title>Ss015</work-title>
  </work>
  <identification>
    <creator type="composer">Transcribed by Oemer</creator>
  </identification>
  <part-list>
    <score-part id="P1">
      <part-name>Piano</part-name>
      <score-instrument id="P1-I1">
        <instrument-name>Piano</instrument-name>
        <instrument-sound>keyboard.piano</instrument-sound>
      </score-instrument>
      <midi-instrument id="P1-I1">
        <midi-channel>1</midi-channel>
        <midi-program>1</midi-program>
        <volume>80</volume>
        <pan>0</pan>
      </midi-instrument>
    </score-part>
  </part-list>
  <part id="P1">
    <sound tempo="90"/>
    <measure number="1">
      <attributes>
        <divisions>16</divisions>
        <key>
          <fifths>0</fifths>
        </key>
        <staves>2</staves>
        <clef number="1">
          <sign>G</sign>
          <line>2</line>
        </clef>
        <clef number="2">
          <sign>G</sign>
          <line>2</line>
        </clef>
      </attributes>
      <note>
        <rest measure="yes"/>
        <duration>8</duration>
        <staff>2</staff>
      </note>
      <backup>
        <duration>8</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>8</duration>
        <staff>1</staff>
      </note>
      <backup>
        <duration>8</duration>
      </backup>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>5</octave>
        </pitch>
        <duration>8</duration>
        <type>eighth</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>2</voice>
      </note>
      <backup>
        <duration>8</duration>
      </backup>
      <note>
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>5</octave>
        </pitch>
        <duration>8</duration>
        <type>eighth</type>
        <stem>down</stem>
        <staff>1</staff>
        <voice>2</voice>
      </note>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>2</staff>
      </note>
      <backup>
        <duration>12</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>24</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <backup>
        <duration>24</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>2</staff>
      </note>
      <backup>
        <duration>12</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>24</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <backup>
        <duration>24</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>24</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <backup>
        <duration>12</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>2</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>16</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>16</duration>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>8</duration>
        <type>eighth</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>8</duration>
      </backup>
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>8</duration>
      </backup>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>40</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>48</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>32</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>48</duration>
        <dot/>
        <staff>2</staff>
      </note>
      <backup>
        <duration>8</duration>
      </backup>
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>8</duration>
        <type>eighth</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
    </measure>
    <measure number="2">
      <print new-system="yes"/>
      <note>
        <rest measure="yes"/>
        <duration>8</duration>
        <staff>2</staff>
      </note>
      <attributes>
        <clef number="1">
          <sign>F</sign>
          <line>4</line>
        </clef>
      </attributes>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <backup>
        <duration>12</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <backup>
        <duration>12</duration>
      </backup>
      <note>
        <pitch>
          <step>D</step>
          <alter>1</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
    </measure>
    <measure number="3">
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>5</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>down</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>down</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>96</duration>
      </backup>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>64</duration>
        <type>whole</type>
        <stem>down</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <note>
        <rest measure="yes"/>
        <duration>48</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>2</staff>
      </note>
    </measure>
    <measure number="4">
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <note>
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>5</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>48</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>96</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>down</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
    </measure>
    <measure number="5">
      <note>
        <rest measure="yes"/>
        <duration>64</duration>
        <staff>1</staff>
      </note>
      <backup>
        <duration>64</duration>
      </backup>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <note>
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
    </measure>
    <measure number="5">
      <print new-system="yes"/>
      <attributes>
        <clef number="2">
          <sign>F</sign>
          <line>4</line>
        </clef>
      </attributes>
      <note>
        <rest measure="yes"/>
        <duration>8</duration>
        <staff>1</staff>
      </note>
      <attributes>
        <clef number="1">
          <sign>G</sign>
          <line>2</line>
        </clef>
      </attributes>
      <backup>
        <duration>8</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <backup>
        <duration>12</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>8</duration>
        <staff>2</staff>
      </note>
      <note>
        <rest measure="yes"/>
        <duration>24</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <backup>
        <duration>24</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>2</staff>
      </note>
      <backup>
        <duration>12</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>1</staff>
      </note>
      <backup>
        <duration>12</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>12</duration>
        <dot/>
        <staff>2</staff>
      </note>
      <note>
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>12</duration>
        <type>eighth</type>
        <dot/>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>12</duration>
      </backup>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>4</duration>
        <type>16th</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>4</duration>
      </backup>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>down</stem>
        <staff>2</staff>
        <voice>2</voice>
      </note>
      <backup>
        <duration>12</duration>
      </backup>
    </measure>
    <measure number="6">
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>5</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>32</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>32</duration>
        <staff>2</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>2</voice>
      </note>
      <backup>
        <duration>16</duration>
      </backup>
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>8</duration>
        <type>eighth</type>
        <stem>down</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>8</duration>
      </backup>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>16</duration>
      </backup>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>down</stem>
        <staff>1</staff>
        <voice>2</voice>
      </note>
    </measure>
    <measure number="7">
      <note>
        <pitch>
          <step>F</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>16</duration>
      </backup>
      <note>
        <pitch>
          <step>D</step>
          <alter>1</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>down</stem>
        <staff>1</staff>
        <voice>2</voice>
      </note>
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>48</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>48</duration>
        <dot/>
        <staff>2</staff>
      </note>
      <note>
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <note>
        <chord/>
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <note>
        <chord/>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>32</duration>
      </backup>
      <note>
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>5</octave>
        </pitch>
        <duration>8</duration>
        <type>eighth</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>8</duration>
      </backup>
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>down</stem>
        <staff>1</staff>
        <voice>2</voice>
      </note>
      <backup>
        <duration>8</duration>
      </backup>
    </measure>
    <measure number="8">
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <type>quarter</type>
        <stem>up</stem>
        <staff>1</staff>
        <voice>1</voice>
      </note>
      <backup>
        <duration>48</duration>
      </backup>
      <note>
        <rest measure="yes"/>
        <duration>16</duration>
        <staff>2</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>down</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <note>
        <chord/>
        <pitch>
          <step>F</step>
          <alter>1</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>down</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
      <note>
        <chord/>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>32</duration>
        <type>half</type>
        <stem>down</stem>
        <staff>2</staff>
        <voice>1</voice>
      </note>
    </measure>
  </part>
</score-partwise>

Command You Execute

oemer ss015.png

[BreezeWhite]

oemer doesn't support over two stafflines-per-group music sheet. The maximum supported stafflines per group is two, just like a normal piano sheet for two hands.

[mm3509]

Thank you, it makes sense. I don't remember seeing it in the README and checking again, I haven't found it either. If you want, I can add a note about it in a PR.

[BreezeWhite]

I remembered I've wrote it somewhere in the readme though (maybe deep in the technical section?). But it's indeed better mentioning this in a more obvious place. If you are willing to do, I'll be very appreciate about it ^^

[liebharc]

Hi @emonigma , the scan you have provided seems to be a binary scan (only black or white pixels, no gray scale or color) and there are a lot of small artifacts (I marked a few in red here):

From my experience with oemer, those artifacts might decrease the performance of the detection. The models oemer is using are trained on distorted gray scale images, but those high contrast artifacts aren't part of the training. So if you try to get those images processed by any OMR software, you might want to try to preprocess the images to reduce those artifacts. If you do it in an automated way then OpenCV should have tools which help you, otherwise Photoshop or Gimp should be useful.

Also you could give homr a try. It's a project I started based on oemer. It uses a different staff detection algorithm which was intended to work better with pictures taken from cameras and uses a transformer model for symbol detection. I gave your image a try and while not perfect, the results seem to be better. Just note that homr is basically an experiment of mine, so the performance will likely not be reliable. I would however be happy about feedback.

scan.musicxml by homr

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<score-partwise>
  <work>
    <work-title>3</work-title>
  </work>
  <defaults>
    <page-layout>
      <page-height>120</page-height>
      <page-width>110</page-width>
    </page-layout>
  </defaults>
  <part-list>
    <score-part id="P1">
      <part-name />
      <score-instrument id="P1-I1">
        <instrument-name>Piano</instrument-name>
        <instrument-sound>keyboard.piano</instrument-sound>
      </score-instrument>
      <midi-instrument id="P1-I1">
        <midi-channel>1</midi-channel>
        <midi-program>1</midi-program>
        <volume>100</volume>
        <pan>0</pan>
      </midi-instrument>
    </score-part>
    <score-part id="P2">
      <part-name />
      <score-instrument id="P2-I1">
        <instrument-name>Piano</instrument-name>
        <instrument-sound>keyboard.piano</instrument-sound>
      </score-instrument>
      <midi-instrument id="P2-I1">
        <midi-channel>1</midi-channel>
        <midi-program>1</midi-program>
        <volume>100</volume>
        <pan>0</pan>
      </midi-instrument>
    </score-part>
    <score-part id="P3">
      <part-name />
      <score-instrument id="P3-I1">
        <instrument-name>Piano</instrument-name>
        <instrument-sound>keyboard.piano</instrument-sound>
      </score-instrument>
      <midi-instrument id="P3-I1">
        <midi-channel>1</midi-channel>
        <midi-program>1</midi-program>
        <volume>100</volume>
        <pan>0</pan>
      </midi-instrument>
    </score-part>
  </part-list>
  <part id="P1">
    <measure number="1">
      <print new-system="yes" />
      <attributes>
        <divisions>16</divisions>
        <key>
          <fifths>1</fifths>
        </key>
        <clef>
          <sign>G</sign>
          <line>2</line>
        </clef>
      </attributes>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="2">
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="3">
      <note>
        <pitch>
          <step>F</step>
          <alter>1</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="4">
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="5">
      <print new-system="yes" />
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="6">
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>5</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="7">
      <note>
        <pitch>
          <step>F</step>
          <alter>1</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>5</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="8">
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="9">
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
    </measure>
  </part>
  <part id="P2">
    <measure number="1">
      <print new-system="yes" />
      <attributes>
        <divisions>16</divisions>
        <key>
          <fifths>1</fifths>
        </key>
        <clef>
          <sign>G</sign>
          <line>2</line>
        </clef>
      </attributes>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="2">
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="3">
      <note>
        <pitch>
          <step>F</step>
          <alter>1</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="4">
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="5">
      <print new-system="yes" />
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="6">
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>5</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="7">
      <note>
        <pitch>
          <step>F</step>
          <alter>1</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>5</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="8">
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="9">
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
    </measure>
  </part>
  <part id="P3">
    <measure number="1">
      <print new-system="yes" />
      <attributes>
        <divisions>16</divisions>
        <key>
          <fifths>1</fifths>
        </key>
        <clef>
          <sign>F</sign>
          <line>4</line>
        </clef>
      </attributes>
      <note>
        <rest measure="yes" />
        <duration>16</duration>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="2">
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>48</duration>
        <voice>1</voice>
        <type>half</type>
        <dot />
        <staff>1</staff>
      </note>
    </measure>
    <measure number="3">
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>48</duration>
        <voice>1</voice>
        <type>half</type>
        <dot />
        <staff>1</staff>
      </note>
    </measure>
    <measure number="4">
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="5">
      <print new-system="yes" />
      <attributes>
        <divisions>16</divisions>
        <key>
          <fifths>0</fifths>
        </key>
        <clef>
          <sign>F</sign>
          <line>4</line>
        </clef>
      </attributes>
      <note>
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>4</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="6">
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>B</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="7">
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>C</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>E</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>A</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="8">
      <note>
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <pitch>
          <step>F</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>16</duration>
        <voice>1</voice>
        <type>quarter</type>
        <staff>1</staff>
      </note>
    </measure>
    <measure number="9">
      <note>
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>F</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>D</step>
          <alter>0</alter>
          <octave>3</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
      <note>
        <chord />
        <pitch>
          <step>G</step>
          <alter>0</alter>
          <octave>2</octave>
        </pitch>
        <duration>32</duration>
        <voice>1</voice>
        <type>half</type>
        <staff>1</staff>
      </note>
    </measure>
  </part>
</score-partwise>

[mm3509]

Thanks! I tried HOMR on a different image and it works surprisingly well, congratulations! I filed an issue about multiple pages (liebharc/homr#5). I'll get used to MuseScore so I can convert back to PDF and MP3.