Open Source ChromeOS MIDI Software

VMPK is a virtual MIDI piano keyboard for Linux, Windows and OSX. Based on Qt and Drumstick the program is a MIDI event generator using the computer's alphanumeric keyboard and the mouse. It may be used also to display received MIDI notes.

Aria Maestosa is a midi sequencer/editor. It lets you compose, edit and play midi files with a few clicks in a user-friendly interface offering score, keyboard, guitar, drum and controller views. Git repository: https://github.com/ariamaestosa/ariamaestosa

A multi-platform software synthesiser emulating (somewhat inaccurately) pre-GM MIDI devices such as the Roland MT-32, CM-32L, CM-64 and LAPC-I. In no way endorsed by or affiliated with Roland Corp. Source hosted at: http://www.github.com/munt/

Impro-Visor® is a music notation tool for producing monophonic lead sheets, specifically intended to help the improviser. Chord symbols are used to generate backing tracks automatically. Improvisation advice exists in the form of note coloration, database of licks, and automatic lick generation from grammars. Grammars can be learned automatically from transcriptions. Styles can be edited and created by the user. Other features include generation of roadmaps for understanding keys and idiomatic chord progressions, chord voicing keyboard, MIDI and MusicXML export. See http://www.cs.hmc.edu/~keller/jazz/improvisor for general information, including tutorials. Support and additional resources are through the user group https://groups.yahoo.com/neo/groups/impro-visor/info. The most recent source code, since summer of 2015, is housed here: https://github.com/Impro-Visor/Impro-Visor This started when SourceForge was down for over one week during an active development period.

Psycle is a Music tracker (like FastTracker 2 or Impulse Tracker) combined with plugin modularity. It supports its own plugin API, the VST2 plugin standard, and a tracker style sampler playback.

A featureful SID-music creation tool (tracker) for the Commodore 64. It includes many advanced effects and tools like keyboard-tracking, tempo-programs/funktempo, gateoff-table-pointers, filter-shift, SID-export, executable-export, MIDI/XM conversion and MIDI-input hardware, etc., etc. NOTE: I left SourceForge for reasons not ethical to mention here. You can find me and my further work at these locations: http://hermit.sidrip.com http://csdb.dk/scener/?id=18806 https://github.com/hermitsoft/

Frinika is a free, complete music workstation software for Linux, Windows, Mac OSX and other operating systems running Java. It features sequencer, soft-synths, realtime effects and audio recording.

PortMedia was created to develop and share cross-platform, open-source I/O libraries for digital media including MIDI, video, and audio. Only a few things were released under the PortMedia umbrella. These are now hosted by the github.com/Portmidi/ project, where you can find the lastest versions of PortMidi, portsmf (Standard MIDI File support and more), and see github.com/rbdannenberg/scorealign for MIDI and/or Audio score alignment.

SoundHelix is a free versatile Java framework for algorithmic random music composition. SoundHelix can generate random songs, play them (for example, on any number of MIDI devices or MIDI-capable software synthesizers) and is highly customizable using XML configuration. SoundHelix also allows writing the generated music as MIDI files. SoundHelix produces music that is actually enjoyable to listen to.

Jalmus is a free, open source music education software helping the musicians, especially pianists, to improve their sight-reading. You can train to read music with both exercises on notes or rhythms.

libTiMidity is a MIDI to WAVE converter library that uses Gravis Ultrasound-compatible patch files to generate digital audio data from General MIDI files. This library based on the TiMidity decoder from SDL_sound library.

MidiQuickFix allows you to directly edit the events in a Midi file. It is intended to make it easy to find and fix problems, such as setting volume and pan values for a track, without the need for a complex Midi sequencing program.

Speedy MIDI is an editor designed for choirs and singers to quickly generate MIDI files for rehearsal.

ABC is a text-based music notation language. This project aims to promote the ABC music notation language by providing cross-platform, open-source tools for manipulating, displaying and playing (via MIDI) ABC files. This project is here for historic reasons and there is not too much activity now. The abcmidi project is updated more frequently.

WildMidi is a midi processing library and a midi player using the gus patch set.

Common Music (CM) is a real-time music composition system implemented in JUCE/C++ and Scheme. It generates musical output via MIDI, OSC, CLM, FOMUS and CSOUND. Its user application is called GRACE (Graphical Real-time Algorithmic Composition Environment)

Drumstick is a tool to play music. This is a set of C++ MIDI libraries using Qt5 objects, idioms and style. It contains a C++ wrapper around the ALSA library sequencer interface; ALSA sequencer provides software support for MIDI technology on Linux. A complementary library provides classes for SMF (Standard MIDI files: .MID/.KAR), and Cakewalk (.WRK) file formats processing. A multiplatform realtime MIDI I/O library is also provided.

Give the chord progression and a style and JChordBox generates a song. JChordBox is a library tool that can generate backing tracks from a chord progression and a music style. A music Style is describe using an XML and a MIDI file. You can generate an XML Style file from a MIDI file by adding markers to delimit grooves. An XML Song file describes a chord progression and sets the music style to use. JChordBox comes with several command line tools (GenerateSong, CreateStyleFromMidiFile, SongPlayer …). NEW:The application center is called SongPlayer and is a text based user interface that can play JChordBox song. SongPlayer is a MIDI Player that can loop a song, mute or soloing tracks and displays transport informations. SongPlayer is now the default jar application. NEW:Examples have been added to the distribution package.

This script provides a graphical user interface for accessing the raw text of files created by the free version of Mario Paint Composer. It makes it easier to upload and download songs, and also allows songs to be exported in standard midi format.

DGuitar is a Guitar Pro (*.GP4,*.GP3,GTP) viewer and player that works under Linux, MacOs, Solaris, BSD, Windows, or any other operating system with Java Runtime 1.4.X. http://DGuitar.sourceforge.net If you are a JAVA developer visit this page https://bitbucket.org/mauriciograciag/dguitar/overview

YAAMIDRUM (Yet Another Midi Drum) is an open hard- and software project based on Arduino (http://www.arduino.cc/). Supports 48 inputs for piezos or other sensors and optical hihat with infrared sensor. Cheap and easy to build.

Free Clef is a lightweight notation editor which allows you to quickly write your songs and export them to MusicXML format. It lets you distribute interactive sheet music online, and to use score files with a wide variety of music software.

This tool enables you to create MIDI with tracker-style handling. The main difference to most of the contemporary trackers is that it gives orderlist/sequence for all tracks, so you can use one pattern anywhere without tedious copy/paste process, just by typing its number in the right place... NOTE: I left SourceForge for reasons not ethical to mention here. You can find me and my further work at these locations: http://hermit.sidrip.com http://csdb.dk/scener/?id=18806 https://github.com/hermitsoft/

sutb - txt2mid file converter. Reads a text file of notes and converts to a midi file (sutb songfile > songfile.mid). Create your own songs for band, orchestra or organ. Play the song with timidity (sutb songfile | timidity -)

Tracked Music Editor Supports WAV, DLS files. Supports recording from MIDI devices.