Free · Estimate the strongest musical key
Audio Key Finder from Notes
Transcribe a clear instrument recording and compare its note weights with major and minor key profiles.
- Real note transcription
- Audio stays in this tab
- Useful music downloads
Find the notes
Add one instrument or voice recording. The model runs in this browser tab.
One main instrument works best Under 10 minutes
Note settingsRecommended values are already chosen.
Your result will appear hereNothing is uploaded. The first run also loads a small music model into this tab.
MIDI and data downloadsThree simple steps
How to use it
- Add a clean musical passage long enough to contain several notes.
- Transcribe it and inspect the pitch-class evidence.
- Use the estimate as a starting point and confirm it by ear.
Your recording stays on this device
Spotify Basic Pitch and TensorFlow.js find notes inside this browser tab. Bookify does not upload or save the audio. The first run loads the open-source model, and closing the tab removes the working copy.