Visual Interface Does the piano keyboard display correctly with at least 2 octaves (24 keys)? Yes No Are black and white keys visually distinct and professionally styled? Yes No Does the interface properly highlight keys when pressed? Yes No Is the layout responsive and functional across different screen sizes? Yes No Interactive Mode Does the piano respond correctly to mouse clicks? Yes No Does the keyboard mapping match the specified requirements exactly? Yes No Can multiple keys be pressed simultaneously? Yes No Does the recording feature capture all key presses and releases with accurate timing? Yes No Does the recording export function generate valid JSON in the specified format? Yes No Audio Implementation Does each key generate the correct piano sound? Yes No Is the audio playback free of glitches and delays? Yes No Does the system handle multiple simultaneous notes correctly? Yes No Are note release and decay implemented properly? Yes No Prepared Mode Does the system correctly load and parse JSON song files? Yes No Do the play, pause, and stop controls function as expected? Yes No Is the playback speed adjustment functional? Yes No Does the progress indicator accurately show playback position? Yes No Are upcoming notes displayed visually during playback? Yes No Technical Requirements Does the HTML pass W3C validation? Yes No Does the CSS pass W3C validation? Yes No Does the application work correctly in Chrome, Firefox, and Safari? Yes No Does the code follow standard ESLint rules? Yes No Is the application free of console errors and runtime exceptions? Yes No Is the project implemented without external libraries or frameworks? Yes No File System Integration Does the application properly handle JSON file exports? Yes No Can users successfully import previously recorded files? Yes No Is file error handling implemented appropriately? Yes No Project Presentation and Code Defense Can the team explain their implementation of the Web Audio API? Yes No Can the team demonstrate their understanding of state management in the application? Yes No Can the team explain their approach to handling timing events and recording? Yes No Detailed Feedback What was great? What did you like the most about the program and the team performance? What could be better? How those improvements could positively impact the outcome?