Skip to main content

Core music theory and notation Library .

Project description

Ophis is a core music notation, theory, and analysis tool which can be used as the basis for other music applications. It supports contemporary/conventional notation and Gregorian notation.


  • Tonus — Pitch classes, pitches, octave designations.

  • Mensura — Time signatures, rhythms, note duration.

  • Nota — Notes, note expressions.

  • Melodia — Horizontal note structures (melodies, lines, voices, scales).

  • Chorda — Vertical and two-dimensional note structures (chords, harmonies, polyphony).

  • Signum — Clefs, staff and score expressions, additional markings.

  • Armonica — Music theory and analysis.

  • Scribo — Notation/printing via Lilypond, Gregorio, and other formats (MusicXML, ABC).

  • Medio — MIDI control.

  • Boustrophedon — JavaScript wrapper/API/something (JSON)

Project details

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor NVIDIA NVIDIA PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page