Music notation · AI copilot · Browser-based
A browser notation editor that does the tedious parts of writing music — stretch a pattern across a section, voice a chord on a beat, transpose every part in one click — and nudges you with ideas when you're staring at a blank bar. Free to start. You edit every note.
Want in sooner? Every friend who joins with your link moves you up the line.
See it in action
Watch it voice a chord across a whole phrase in one move. That's the thing notei does — the busywork, in a click.
What is notei?
notei is a music notation editor that lives in your browser. Bring an idea and it handles the tedious parts of turning it into a finished score — stretch a rhythmic pattern across a section, voice a chord on a highlighted beat, vary a melody, transpose every part at once — and when you're stuck on a blank bar it offers a few ways forward. It's the opposite of a black-box generator. You write and edit every note, and it's yours. Free to start, like MuseScore, with help the moment you get stuck.
Built solo by a high-schooler in Singapore, in the open, between classes and band rehearsals. The roadmap is shaped by the musicians on this list.
No. notei doesn't spit out a finished track you can't touch. It works on a real score you write and edit, and the AI only does the tedious parts you point it at or offers an idea you can take or ignore. There's nothing to be slop. You approved every bar.
Completely. You wrote it, you edited it, it's your score. Export it, perform it, publish it. notei has no claim on your music.
MuseScore engraves music you already know how to write. notei does that too, and does the busywork around it — voice this chord across the section, transpose every part, stretch this pattern — plus it helps when you're stuck. Free to start like MuseScore, with the help MuseScore never gives you.
Those hand you a finished audio file you can't read or edit. A slot machine for songs. notei hands you editable sheet music you control the whole way. They replace the musician. notei does the musician's grunt work.
No. Hum or play your idea and notei turns it into notation. The AI explains what it's doing, so you can pick it up as you go.
Free to start and free to write. Some power features (clean exports, heavier AI assists, longer arrangements) sit behind a paid tier later. The editor itself is never paywalled.