An engraved program, on your phone
From the live capture to the finished score — every screen is hand-set in ivory, espresso, and brass.
Listen
Tap to capture — live waveform, key, tempo, and time signature locking in as notes stream onto the staff.
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See it transcribe in real time
A short walkthrough — from the listen button to a fully engraved, transposable score.
From sound to score, beautifully
Notation that feels typeset by hand — and works the way musicians actually think.
Listen & Capture
One big button with a live waveform. As it captures, the staff fills note by note while key, tempo, and time signature lock in above.
Hand-Drawn Engraving
A real five-line staff — treble clef, serif time signature, note heads, stems, eighth flags, and ledger lines, placed by true pitch math.
Transpose & Parts
Switch between Piano, Violin, and Cello, then transpose by semitone — the score re-renders and the key badge updates instantly.
Playback Cursor
Press play and a burgundy cursor steps through every note at the piece's tempo, so you can follow along as it performs.
Engraved Library
Each capture is saved as an engraved score card with a mini staff preview. Tap any card to reopen the full transcription.
Tune Your Ear
Set instrument focus, notation complexity, default transpose, and an accuracy-vs-speed slider — all remembered between sessions.
The AI movement to come
Today Clef runs on pitch-detection and notation engines. Next: deeper listening — separating instruments, hearing chords and lyrics, and publishing print-ready scores.
Instrument Separation
AI splits a full mix into individual parts — capture a quartet and get four clean, separate staves.
PlannedChord & Harmony Reading
Hear chord changes and voicings, with auto-generated lead-sheet symbols above the melody line.
PlannedLyric Transcription
Speech models align sung words under the notes, turning a recording into a fully texted vocal score.
PlannedPrint-Ready Export
Polished MusicXML, PDF, and MIDI export with publisher-grade spacing — ready for the music stand.
PlannedWatch the score take shape
Clef is app #95 in the 100 Apps 100 Hours sprint. Every screen, recorded and shipped — follow along for daily drops, build notes, and early looks.
Tired of transcribing by ear?
Reserve your seat and be among the first to play with Clef at launch.
The house lights are dimming.
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