For worship teams & songwriters
A lead sheet from any recording.
Melody, chords and key — one page, ready for the band.
Record the song once and hand everyone a chart: melody on the staff, chord symbols above, key up top. Transpose for your singer in one tap. Originals and arrangements you own — charted in minutes, not evenings.
Free during early access · no card · private by default
How it works
Record or upload
Your own playing, a voice memo, a hum — up to six minutes. The exact Token price is shown on the file before anything is charged.
Matra writes the chart
Chords, key, meter and melody — drafted in about a minute, with confidence on every chord.
Fix, then keep it
Correct anything with a tap; the engine learns from it. Export PDF, MusicXML or MIDI — free, and free again next time.
What you get
One recording in — a whole chart out.
- Chords with per-chord confidence — green means trusted, orange means check
- Key, tempo and meter, detected from the audio
- Staff notation / lead sheet (beta — young, and honest about it)
- Native sargam view — Sa Re Ga Ma, komal and tivra written properly
- Transpose in a tap, with capo suggestions for guitarists
- PDF, MusicXML and MIDI exports
Questions, answered
Can I transpose for my vocalist?
Yes — transpose the whole chart in semitone steps, and guitarists get capo suggestions with the shapes to play.
Can I use it for worship sets?
That's exactly the use: chart your own recordings and arrangements, then transpose for the team. Copyrighted songs stay your private charts; export PDF hand-outs anytime.
How accurate is it?
Chords and key are our strongest outputs and carry per-chord confidence so you always know what to trust. Staff notation is early access — honest but imperfect today, and improving as the engine trains on more recordings.
What does it cost?
Right now — nothing. Matra is free during early access (fair use: about 20 recordings a day), and every file still shows its real Token price so there are no surprises later. The meter: about 1 Token per 15 seconds, a typical 3½-minute recording ≈ ◇14. When billing starts, early-access musicians keep ◇600 — plus half price for 3 months and 25% off the rest of their first year. Sargam and notation views cost nothing, ever.
Is my audio private?
Yes. Uploads are private by default, nothing you make is published anywhere, and we never train on your audio.
Built with the musicians who use it.
Matra is in early access. Fix a chord or a note the engine got wrong, and we gift you Tokens as thanks — your ear makes the engine better for everyone.
Free during early access · founders keep ◇600 when billing starts