Import your files, sort them, annotate them, practise them and play them. MusicXML, PDF, ChordPro, MP3 or MIDI: OPUS Reader brings together your library and every tool it needs, in a single browser page.
A viewer displays a file. OPUS Reader follows your scores through their whole life: you gather them, you file them, you work on them, and you find them again on stage as well as in the practice room.
Your scores are not a list of links: they are files you sort, rename, group and find again, whatever their format.
Playback, practice, accompaniment, annotation, archiving: OPUS Reader gathers into a single page everything that usually takes several separate programs.

The engraving is redrawn on screen by Verovio and the cursor follows the music note by note. A4 page, horizontal scrolling or a continuous ribbon: pick the layout that suits you.

Plug in a MIDI piano or simply use the microphone: OPUS waits for the right note in sight-reading mode, or follows you without stopping in flow mode.

The keyboard shows the keys to play, the fingering and which hand is involved. Falling-note mode makes learning easier, with a keyboard scaled from 25 to 88 keys to match your instrument.

Drop in your own files, sort them into categories and tags, build setlists. Everything stays available offline and follows you from one device to the next.

Annotations, cropping, jump points for repeats, full-screen concert mode and bookmarks: the reader is built to be used while you are playing.

ChordPro charts appear with guitar and piano chord diagrams, transpose in one click and scroll by themselves at the tempo you choose.

The Bluetooth and wired pedals on the market are recognised as a standard keyboard: you turn the page with your foot, without letting go of your instrument.

Export a scrolling score ribbon, locked to the sound and ready to publish. Themes, visual effects, staff highlighting and a transparent background for your own edits.
Slow the tempo down, loop a hard passage with a gradual speed-up, mute a part so you can play it yourself, transpose for your instrument, keep the metronome at hand.
A score can be tied to an MP3 or to a YouTube video. It then scrolls at the performer's exact pace, rallentandos and fermatas included.
Video tutorials: sync your scores
PDF + MP3
Lock a recording to a PDF score, bar by bar.
XML + MP3
Align an audio track with your interactive score.
XML + YouTube
Pair a YouTube video with the score.
Free-scores.com members publish their scores in MusicXML, pair them with their own recordings and sync them bar by bar. Your works then become interactive for every visitor.
Find your library, your annotations and your setlists again on your Android phone or tablet. The app brings together OPUS Reader, the metronome, NoteQuest, NoteBlitz, RunChords and the free-scores.com catalogue.
On iPhone and iPad, add OPUS Reader to your home screen from Safari: you get the very same app, with no store involved.
Yes. Playback, practice mode, loops, transposition, annotations, setlists, MP3 and YouTube play-along, the games: all of it is free, with no limit on the number of scores. Only a few advanced features need a Premium account:
No. OPUS Reader runs in the browser, on computers as well as tablets and phones. You can still add it to your home screen to use it like an app, including with no connection.
Scores engraved in MusicXML, MXL and MEI, PDF files, ChordPro charts and MIDI files. You can open a score from the Free-scores.com catalogue or drop in your own files.
No, but it helps. With no hardware at all, the microphone is enough for the reader to follow your playing. With a MIDI piano, wired or Bluetooth, tracking gets more precise and the fingering appears on the on-screen keyboard.
A score you open from your own device stays in your browser. Saving to our servers, useful to find your library again elsewhere, only happens if you ask for it.