This demo shows Oemer deskewing sheet music images and transcribing them into MusicXML scores.
Oemer
Oemer transcribes images of sheet music into editable MusicXML that can be converted to MIDI.
About Oemer
Oemer is an open-source, command-line Optical Music Recognition system that transcribes images of sheet music into MusicXML files that can be edited and converted to MIDI. Running the command on an image outputs a MusicXML file and an image of analyzed elements to the current directory.
It is built to handle skewed and phone-taken photos of printed Western music notation. It probably does not work on handwritten scores or other notation types, and processing with a GPU usually takes around 3-5 minutes.
Key features
- Transcribes sheet music images into MusicXML files
- Handles skewed and phone-taken photos of scores
- Outputs image showing analyzed musical elements
- Runs inference with Onnxruntime by default, TensorFlow optional
- Allows custom output path for result files
- Option to disable deskewing for non-skewed images
Best for: People comfortable with the command line who need to convert photos of printed Western notation into editable MusicXML.
Good for
- Handles skewed and phone-taken photos of sheet music
- Outputs both MusicXML and an image of analyzed elements
- Open-source code with Onnxruntime or TensorFlow inference choice
Watch out for
- Probably does not work on handwritten scores or non-Western notation
- GPU processing usually takes 3-5 minutes per image
- First run requires checkpoint download that may take up to 10 minutes
Oemer at a glance
- Website
- github.com/BreezeWhite/oemer
- Category
- Music & Audio › Lyrics & Sheet Music
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Oemer alternatives
Tools and sites you could use instead, ranked by how closely they match.
This Python library transcribes polyphonic music, including vocals, instruments, chords, and rhythm.
Open source
11 alternatives
The Awesome Sheet Music list catalogs software, libraries, and other tools for working with scores.
Open source
17 alternatives
Chordly creates online chord sheets, supports transposition and set lists, and exports sheets as PDFs.
FreeOpen source
12 alternatives
LRCGET scans a music folder and downloads matching synchronized lyrics from the LRCLIB service.
Open source
13 alternatives
LRC Maker creates scrolling lyric files with timestamps and lets users synchronize text to audio.
Open source
12 alternativesPopular in Lyrics & Sheet Music
Well-known listings from the same topic.
Piascoreapps.apple.com/app/piascore-hd/id406141702Score Perfect Professionalarchive.org/details/score-perfect-professional…flutetunesflutetunes.comsheetmusicedensheetmusiceden.comDIAMMdiamm.ac.ukAnimeSongLyricsanimesonglyrics.com
Oemer FAQ
How do I transcribe an image with Oemer?
Install with pip install oemer, then run oemer . Results are written to the current directory unless an output path is set with -o.
Does Oemer work on handwritten sheet music?
No. The models were trained to identify Western Music Notation and will probably not work on handwritten scores or other notation types.
How long does transcription take?
With a GPU it usually takes around 3-5 minutes. The first run may take up to 10 minutes to download checkpoints, depending on connection speed.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.