Open Source Music Composition Software

QMidiArp is a MIDI arpeggiator, phrase generator and controller LFO for ALSA and JACK. It can run multiple synchronized arpeggiators, LFOs and step sequencers. The modules are also available as LV2 plugins with Qt user interface. QMidiArp has been growing since june 2009 on top of Matthias Nagorni's original arp idea.

PsalticTools includes: • a set of utilities (plugins) for typing of Byzantine notes in parallel double notation (Byzantine and Western), based on MuseScore free music editor; • the PsalticHelper program for searching for formulas of Byzantine music in music books. • the UniPsaltica2 font with the characters of the musical Byzantine notation in Unicode.

A unique desktop music composing application for PC/Mac/Linux/Android with a tracker style interface and a simple modular Java plugin based design allowing rapid improvement and endless expansion.

Standalone, LV2 and VST instruments & effects generating weird sounds, noises and glitches, for experimental music. Heavily inspired by the Futurist musician Luigi Russolo, the aim of this project is to create new instruments for the new century.

Color to Chord The program will convert colors to chords, to inspire music composition.

The MIDI Agent System (MAS) uses the interaction between different agents to generate MIDI notes. This software is designed for live use and it enables the performer to have real time control over very complex music.

Strasheela is a constraint-based music composition system. The user defines music theories by sets of compositional rules and the system creates music which complies with these theories. User-interface is the programming language Oz.

Cyclone is a powerful music application that handles loops in live context, full MIDI controllable. Goal: to make an app that can compete with Ableton Live in loop handling power. Cyclone works good in realtime Jack environments.

Within the age of huge -and expensive- sample libraries that fullfill the dreams of every virtual composer, it seems that Soundfonts aren't needed anymore. However, some musicians still need the simplicity of these old fellows in live shows. Chuso's Free Soundfont Collection (ChusoCol) is a simple collection of instruments that would help every live musician to establish their own setup. It is the collection I particularly use and update, and the samples come from a variety of open resources, such as Sonatina Symphonic Orchestra (http://sso.mattiaswestlund.net/), Salamander Grand Piano (http://freepats.zenvoid.org/Piano/) or the GeneralUser GS (http://www.schristiancollins.com/generaluser.php), as well as some samples by myself. It is intended for live musicians who want the better sound with low requirements, in a library of ~300Mb. The library is still in alpha state, and improvements are being made. The final soundfont is compiled using Polyphone (http://www.polyphone.fr/)

A virtual piano in flash. Play and record music with the mouse or keyboard.

Takt is a text-based language for describing note and chord sequences as well as algorithmic compositon rules with C-like syntax. This software package contains a REPL (read-eval-play loop) interpreter for Takt, a MIDI-file-to-Takt translator, and an Emacs interface program which enables note entry from a MIDI keyboard.

Automatic music notation application for musicians and composers.

A sequencer specialized for extended just intonation tuning systems. Rationale does not use scales, only collections of notes related by frequency ratio, infinitely transposable. Any rational frequency ratio can be an interval, but no tempered tunings.

A software music synthesizer inspired by 8-bit Atari Softsynth. It can import, edit and play Atari Softsynth tunes on PC. You can write your music in BASIC-like language and create your instruments with graphic editor. Now available for Raspberry Pi 2

Kepik is a melody generator that generates melody based on user-customized constraints.

This android application is aiming to create 'nice' harmonized melodies and to produce digital partitions in lilypond format. Heavy Random Signal processing and expert system coding embedded.

CULDAW means Collaborative Ubiquitous Digital Audio Workstation. The goal if this project is to build a tool for Symbian S60 devices to produce music with phones. It includes an step sequencer and a synthetizer.

NO LONGER UNDER DEVELOPMENT>>>AT LEAST NOT AT THIS TIME (AS OF 12/21/2011)

JJazz generates musical MIDI accompaniment based on a chord leadsheet ("Cm7 / F7") and rhythm style information, like e.g. Band-in-a-Box or Jammer. It can be expanded thanks to a plugin system, for unlimited rhythm generation capabilities.

Midi sequencer based on old-style analogue devices with emphasis on live interaction and improvisation. For more info please start with the project Wiki: http://p.sf.net/ma2/ProjectWiki

Name a chord and find all scales from a group of notes.

Ouroborus is an artificial life framework for mobile agents on a background of cellular automata. It can be used to teach and research topics such as population genetics, ecology and evolution. The demo includes a curses view and live Csound audio.

The project is composed of two layers. The first layer is an artificial intelligence engine, partwriter, that writes music based on some heuristic. The second layer is the layer that defines the heuristic. The definition of this heuristic defines the type of music that partwriter will create. Currently (December 2012), the deepest layer is more or less complete. The author is now writing second layers of interest, namely species counterpoint heuristics according to Fux's Gradus Ad Parnassum.

This android app is producing music and partition sheets in real time. Furthermore, the AI module can be activated and be trained to learn you prefered style and play it. You can also team play your music with the interconnect mode. Finally, move your phone like a 'chef d'orchestre' and see how it changes the music...

Generate a random twelve-tone matrix, to inspire Schoenberg style serial music composition