Skip to content
View in the app

A better way to browse. Learn more.

Opusmodus

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Announcements

News and announcements only

  1. Started by opmo,

    New: INFINITY-SERIES MESSIAEN-PERMUTATION STRAWINSKI-ROTATION Thanks to Jesper Elen Midi conversions: MIDI-TO-PITCH MIDI-TO-INTEGER MIDI-TO-INTERVAL Fix to ambitus system with midi rage 0-127 Change to System Functions structure. Fix to ttrem notation display and Grand Staff layout.

    • 0 replies
    • 4.9k views
  2. Started by lviklund,

    I just want to thank you all for you hard work. I have lived and breath Opusmodus for a long time now. It is a wonderful music tool in more or less every aspect. Regards Lasse

    • 0 replies
    • 4.8k views
  3. Started by opmo,

    The Opusmodus 1.1 update is recommended for all Opusmodus users. This update: Interface stability and compatibility. Listener speed improvement. DEF-SCORE performance improvement. System optimisation and revision of random functions - less CONS and LOOPs: (different results with set :seed may occur). Additional layout and improvement to MusicXML notation display. Added Layout options: :ignore-velocity :ignore-tempo :ignore-time-signature :ignore-bars :ignore-clef :cautionary-accidentals :natural-accidentals :all-accidentals :section option added to many more functions. MERGE-VOICES, MAKE-OMN and DISASSEMBLE-OMN functions are performing correctly now. Revision to System F…

    • 0 replies
    • 5k views
  4. Started by opmo,

    pitch-lsystem ls &key depth map start remove preserve [Function] Arguments and Values: ls a name of the l-system class. depth an integer. Depth of recursion. map mapping symbols (variables) to pitches. start pitch symbol (pitch transposition start). remove removes selected symbol from the list. The default is NIL. preserve preserved selected symbol from the list. The default is NIL. Pitch L-SYSTEM Operators: + one semitone transposition up. - one se…

    • 0 replies
    • 5.2k views
  5. Started by opmo,

    length-lsystem ls &key depth map remove preserve omn [Function] Arguments and Values: ls a name of the l-system class. depth an integer. Depth of recursion. map mapping symbols (variables) to pitches. start length symbol (pitch transposition start). remove removes selected symbol from the list. The default is NIL. preserve preserved selected symbol from the list. The default is NIL. omn length symbols or ratios. The default is T (symbols). Length L-SYSTEM Operators: + always length-note - always rest-note * …

    • 0 replies
    • 5.5k views
  6. Started by opmo,

    time-point-system pitch length &key type start mod pcs variant (denominator 4) time-signature seed [Function] Arguments and Values: pitch a pitch list or lists of pitches. length a length or list of lengths (length symbol or ratio). type integers: 1 or 2. (Type of time point system). The default is 1. start integers: from 0 to 11 or ’? (at random). The default is the first integer in the pitch list. mod an integer, the default is 12. variant 'o (origin), 'r (retrograde), 'i (invert), 'ri (retrograde-invert), or …

    • 0 replies
    • 5.5k views
  7. Started by opmo,

    pitch-rotate rotation-number sequence &key chord section ambitus [Function] Arguments and Values: rotation-number a number or list of numbers. sequence list of pitches. chord NIL or T (chord rotation). The default is T. ambitus instrument name or an integer or pitch list (low high). The default is 'piano. section an integer or list of integers. Selected list or lists to process. Description: The function PITCH-ROTATE employs chordal rotation based on a rotation-number value. (pitch-rotate 1 '(c4 d4 e4 f4 g4 a4 b4)) => (d4 e4 f4 g4 a4 b4 c5) (pitch-rotate 2 '(c4 d4 e4 f4 g4…

    • 0 replies
    • 5.2k views
  8. Started by opmo,

    Version 1.0.15605 is out with a new function added: GEN-CHORD2, ready for download. gen-chord2 count chord-size pitches &key ambitus-chord offset transpose rnd-octaves ambitus seed [Function] Arguments and Values: count an integer or list of integers (number of chords). chord-size an integer or list of integers (size of chords). pitches list or lists of pitches. offset an integer or list of integers. ambitus-chord an integer or list of integers. transpose an integer or list of integers. rnd-octaves NIL or T. The default is NIL. ambitus instrument name or an integer or pitch list (low high). The default is 'piano.…

    • 0 replies
    • 5.1k views
  9. Started by opmo,

    Download and start using the full version of the software right away. The 'Quick Start' will guide you and help you to get started! Please note: During the trial period each time you start the application you need to press the Demo button. Language: English, French, Italian and German. Requirements: Mac OS X 10.9 or higher. Go to Download page

    • 0 replies
    • 4.8k views

Copyright © 2014-2026 Opusmodus™ Ltd. All rights reserved.
Product features, specifications, system requirements and availability are subject to change without notice.
Opusmodus, the Opusmodus logo, and other Opusmodus trademarks are either registered trademarks or trademarks of Opusmodus Ltd.
All other trademarks contained herein are the property of their respective owners.

Powered by Invision Community

Important Information

Terms of Use Privacy Policy

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.