Melody and chord transcription
Get both a melody line and a chord progression transcribed from the same source audio.
Audio to MIDI
Audio to MIDI Converter
Drop in any song and KeyTone transcribes melody and chord MIDI directly from the mix, in your browser, in about as long as it takes to make coffee.
What it does
No stem separation wait
KeyTone transcribes directly from the full mix, which is faster and often more accurate than isolating stems first.
Works from a file or a trimmed clip
Upload a full track or trim it down to the exact section you want transcribed before processing.
Runs in your browser
No desktop install required for MIDI extraction. It happens right on the extraction page.
Desktop app for full stem separation
Need isolated vocal, drum, bass, and instrument stems too? The free KeyTone Studio desktop app handles that separately.
Confidence-scored output
Each transcription comes with a confidence read so you know how much cleanup, if any, it needs.
Frequently asked
How accurate is audio-to-MIDI conversion?
Accuracy depends on the source material. Clean, melodically clear recordings transcribe best, while dense, heavily produced mixes may need manual touch-ups afterward.
Do I need to separate stems first?
No. KeyTone transcribes melody and chords directly from the full mix, which skips the slowest part of the old stem-separation-first workflow.
What if I need actual audio stems, not just MIDI?
That's what the free KeyTone Studio desktop app is for: full stem separation for vocals, drums, bass, and more.
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Try it free, no credit card required
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