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| Original author(s) | Janusz Podrazik |
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| Developer(s) | Opusmodus Ltd. 2012–2024 |
| Initial release | 2014; 11 years ago (2014) |
| Stable release | 3.0.29493 / December 9, 2024; 26 days ago (2024-12-09) |
| Written in | Common Lisp |
| Operating system | Windows, macOS (Apple Silicon and Intel) |
| Type | Parametric Composition |
| License | Proprietary |
| Website | opusmodus |
Opusmodus (OM) is a computer-aided composition (CAC) software designed for algorithmic and parametric music composition. It provides an integrated environment for composers, music theorists, and researchers seeking advanced tools for generative and parametric music processes. By enabling the systematic manipulation of multiple musical parameters (including pitch, rhythm, timbre, and articulation) through a Common Lisp–based scripting interface, Opusmodus offers high degrees of flexibility and control. Its extensible design allows users to explore diverse musical styles through rule-based procedures and algorithmic manipulations, thereby facilitating experimentation and innovation in both traditional and contemporary compositional contexts.
History
Opusmodus was conceptualised by Janusz Podrazik in the early 2010s with the aim of streamlining and revolutionising complex compositional tasks within a single platform. The core development team included Bill St. Clair, Ernst van Waning, Gail Zacharias, Greg Pfeil, Janusz Podrazik, Martin Simmons, Matthew Emerson, Yehouda Harpaz, and Zachary Beane. Drawing on techniques from computational musicology and Common Lisp programming, the initial release focused on delivering a functional environment for rule-based music generation. Over subsequent releases, the software expanded to include additional libraries, real-time interaction capabilities, and an enhanced user interface.
Features
Opusmodus includes a suite of functions for data manipulation, pattern generation, and score construction, as well as a spectral analysis tool that enables composers to extract and repurpose frequency content for advanced compositional processes. Its scripting interface (based on Common Lisp) supports user-defined processes, facilitating the creation of new compositional algorithms.
The software exports scores in industry-standard formats (e.g., MusicXML) and supports MIDI output, facilitating the transfer of musical ideas to traditional notation programs or virtual instruments.
A robust library of musical functions helps generate and transform pitches, rhythms, articulation patterns, and harmonic structures, supporting both tonal and atonal techniques.
Users can introduce stochastic processes into their compositions. These methods are customisable and allow for a wide range of musical outcomes, from deterministic sequences to heavily randomised structures.
Opusmodus GPT is a customised version of ChatGPT designed specifically for the Opusmodus community. It integrates the entire Opusmodus documentation and provides comprehensive usage examples. Opusmodus GPT is accessible via the standard (Free) ChatGPT interface, offering composers and developers an easily accessible resource for learning and experimenting with Opusmodus features. It provides precise guidance on functions, syntax, OMN scripting, and Common Lisp integration, ensuring accurate, documented support for composition, notation, and advanced techniques within Opusmodus.
Use cases
Opusmodus has been adopted by composers, academic researchers, and music technologists. Its applications include:
Academic research
Investigations into algorithmic composition, computational musicology, and artificial intelligence in the arts.
Experimental composition
Creation of electroacoustic and instrumental works through advanced generative processes.
Pedagogical purposes
Teaching algorithmic thinking in music conservatories and universities, where students learn to synthesise musical ideas through code.
Universities using Opusmodus
- Mozarteum University Salzburg
- National University of Singapore
- University of Music and Performing Arts Vienna
See also
References
- Julio Herrlein: Study and Practice in Composition with Opusmodus - Book 2 , Diastema Editrice, 2024, ISBN 979-12-80270-56-6
- Guy L. Steele: Common Lisp the Language, 2nd Edition, Digital Press, 1990, ISBN 1-55558-041-6, Web
- Marco Giommoni, Janusz Podrazik: Fundamentals of composition with Opusmodus - Book 1, Diastema Editrice, 2021, ISBN 979-12-80270-07-8
- Opusmodus GPT - A document-based assistant for the Opusmodus music composition environment.
- Marco Giommoni: From Sign to Code - Information Technology and Musical Thought in Our Time, Diastema Editrice, 2024, ISBN 979-12-80270-58-0
External links
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