🎼 Music Transposition Tool
Engine
Loading Python engine (music21 via Pyodide)… this can take 20–60 seconds on first load.
Input Score
Accepts MusicXML (.musicxml, .xml) or compressed MusicXML (.mxl).
Parts & Transpositions
Output Mode
Combined — all selected parts in one file
By instrument — one file per transposition type (Bb, Eb, F, …)