transposer

Read sheet music with OMR, transpose it to any key, get a new PDF. Version 0.1.0.

Sheet music

PDF or image to recognise, or MusicXML/MIDI to transpose directly.

Target key

A key (C, F#m, Bb major, C-duuri) or an interval (-M3, +5).

OMR engine

More options

Direction

Extra octaves

Write for instrument

Paper

Staff size (%)

Scan resolution (dpi)

Mid-score key changes

Engraver

Unreadable text

Chord symbols

Chord band OCR

Orientation

Engines on this server

audiveris — Audiveris 5.x (Java) -- best quality, reads PDFs, finds chord symbols and lyrics
oemer — oemer (Python/ONNX) -- neural end-to-end OMR, no Java needed
oemer is not installed (pip install 'transposer[oemer]')
mozart — Mozart (aashrafh/Mozart) -- offline CV+MLP engine for clean printed single-staff treble-clef music
no Mozart checkout found. Run scripts/fetch_mozart.sh, or set TRANSPOSER_MOZART_DIR to a clone of github.com/aashrafh/Mozart.