Pick a song. The notes fall onto the keys so you can see what to play.
No file window opened? Some in-app viewers block choosing files. Open this page in Chrome instead: copy the link from the Claude app and paste it into Chrome.
Best with a clear piano recording. MP3, WAV, M4A or a MIDI file. Your music stays on this device.
Starting…
Recordings: a small music-listening model (Basic Pitch, open source from Spotify) runs inside this page and writes down the notes it hears. It works best with one clear piano. A full song with singing, drums and other instruments gives a busier result with some wrong notes, because the model writes down everything it hears.
MIDI files already contain exact notes, so they are shown as they are.
Demo is a built-in example tune, always labelled Demo. It is never used in place of your file.
Privacy: your file is processed on this device. Nothing is uploaded, saved or shared, and nothing is charged. Closing the page forgets the song.