Transpose any sheet music to a new key, in one click.
Need a song in your range? Drop in a score or a clean PDF, pick a key, and get an exact transposition you can download any way you need. Built for singers, choir directors, and accompanists.
Start free, no card needed.
Change the key, live.
Cleanest results come from MusicXML or a PDF exported from notation software. Scanned or photographed pages are less reliable.
From original key to yours in three steps.
Bring in your score
Upload a PDF, MusicXML, or MuseScore file, or describe a piece and let LalaScript write one.
Pick your key
Move the whole piece up or down to fit your voice or instrument. Change clef too, if you need it.
Hear it and download
Play it back in the browser to check, then export as PDF, MusicXML, MuseScore, or MP3.
Why not just use a free transposer?
Exact, every time
A deterministic engine, not an AI guess. The same score always transposes the same correct way, no surprises mid-rehearsal.
A score you can actually use
Clean, editable output that opens in MuseScore, Sibelius, or Finale, not a flat image you have to re-key by hand.
Made for real gigs
Re-key a chart for a singer, get the accompaniment as an MP3 to rehearse with, print the new key. Done in seconds.
Transposing, answered.
Can I transpose a PDF of sheet music?
Yes. Upload the PDF and LalaScript reads it into real, editable notation first, then moves it to your key. PDFs exported from notation software convert cleanly; scans and photos are less reliable.
Will the transposition be accurate?
Yes. Transposition runs on a deterministic music engine, not an AI guess: correct key signature, correct accidentals, the same exact result every time.
What can I download after transposing?
MusicXML, MuseScore (.mscz), a freshly engraved PDF, or an MP3 to rehearse with. You can also play it back in the browser before downloading.
Get your piece in the right key.
The studio is free to start. Bring your own score or try an example.
Transpose a score free →