Edit, arrange and create sheet music
from a prompt.
Upload your sheet music and ask for the change right in the editor: a new key, an easier left hand, a cello part. Download it in any format, MusicXML and MSCZ included, and share it with a link. Or start from a prompt or a hummed melody with Create.
Real output from the engine. Try your own score at studio.lalascript.com →
FROM UPLOAD TO DOWNLOAD
Three steps. No desktop software.
Bring a score, say what you want changed in one sentence, and take it anywhere.
Drag in a PDF.
Or MusicXML, or an MSCZ file. A clean export reads best; scans are less reliable.
Say what you want changed
Name a bar, a staff or a beat. The engine does it, and tells you what it did.
Take it anywhere
See and hear it in your browser. Download it in any format and share it with a link that plays anywhere.
WHO IT'S FOR
Made for musicians at every stage.
Accompanists & MDs
Re-key a chart for a singer in seconds, keep it editable, and hand over a clean part without an evening of re-engraving.
Teachers
Stop hand-editing arrangements. When you want to give a student the song they actually asked for, adapt it to where their hands are in seconds, not an evening.
Students
Found a piece you love that's still out of reach? Get a version you can learn from now, without losing the song.
Singers
Need a song in your range? Drop any chart to the right key in one click, then download the accompaniment.
Start from nothing.
Describe a piece and get real, playable notation, or hum a melody and watch it turn into a score you can edit. Every piece is written to the rules a trained musician works by: harmony, voice leading, range and form, the way the repertoire was written. The result is a score a musician could stand behind, not random notes that happen to sound like music. Ask for theory and it comes back labeled: numerals, key, cadence.
Create a score from a prompt →UNDER THE HOOD
Built on music theory, not guesswork.
Built by musicians. Most tools treat notation as pixels. LalaScript reads it as structured musical knowledge: melody, harmony, voice roles, and difficulty, then reasons about it the way a trained musician would.
Semantic analysis
Every note is tagged with its musical role, melody, inner voice, or bass, before any transformation happens.
Melody preservation
The melody is identified and protected. Simplification only removes what doesn't carry the music forward.
Constraint-based output
Hand span, chord density, and rhythmic complexity are treated as hard constraints, not suggestions.
Deterministic where it counts
Transpose, re-voice, and thin chords run on a fixed, rule-based engine, so they are exact and repeatable. AI steps in only for the genuinely creative edits.
Output you can open and fix in MuseScore, Sibelius, Finale and Dorico. Not a flat scan of your score, the gap every other converter leaves open.
Same input, same output, every time. The mechanical work runs on a fixed music-theory engine, not a black-box guess you have to double-check.
Thin dense chords, strip ornaments, keep the melody. The piece lands at the level you actually play, and still sounds like itself.
Ready to try it?
Start free, no card needed. Bring your own score or explore the examples.
Open the studio →ALSO FROM LALASCRIPT
Check out our apps.
Small, focused music apps we build alongside the studio.
Fretless
Slide to play. Lock to real musical notes, record a phrase, then solo over it live.
RhythmSketch
Rhythm and ear training led by haptics. Feel the pattern, tap it back, see your accuracy.
BeatsEye
Hear a rhythm, then pick its notation out of four. Your streak sets the difficulty.