Musicbrainzngs implements Python bindings of the MusicBrainz web service. This library can be used to retrieve music metadata from the MusicBrainz database.

This package provides a tool to control any MIDI-enabled hardware such as synthesizers, drum machines, samplers, or effects. It lets you create custom user interfaces for your MIDI hardware.

Helm is a cross-platform polyphonic synthesizer available standalone and as an LV2 plugin.

Schism Tracker is a reimplementation of Impulse Tracker, a program used to create high quality music without the requirements of specialized, expensive equipment, and with a unique "finger feel" that is difficult to replicate in part. The player is based on a highly modified version of the ModPlug engine, with a number of bugfixes and changes to improve IT playback.

This package provides an Emacs major mode for editing GNU LilyPond music scores.

Collection of audio plugins built with the DISTRHO Plugin Framework (DPF) available in LADSPA, DSSI, LV2 and VST2 formats. This package includes the following plugins: glBars, Kars, Max-Gen examples (MaBitcrush, MaFreeverb, MaGigaverb, MaPitchshift), Mini-Series (3BandEQ, 3BandSplitter, PingPongPan), ndc-Plugs (Amplitude Imposer, Cycle Shifter, Soul Force), MVerb, Nekobi, and ProM.

libdiscid is a C library for creating MusicBrainz and freedb disc IDs from audio CDs. It reads a CD's table of contents (TOC) and generates an identifier which can be used to lookup the CD at MusicBrainz. Additionally, it provides a submission URL for adding the disc ID to the database and gathers ISRCs and the MCN (=UPC/EAN) from disc.

Samplebrain chops samples up into a 'brain' of interconnected small sections called blocks which are connected into a network by similarity. It processes a target sample, chopping it up into blocks in the same way, and tries to match each block with one in its brain to play in realtime.

Drumstick is a set of MIDI libraries using C++/Qt5 idioms and style. It includes a C++ wrapper around the ALSA library sequencer interface. A complementary library provides classes for processing SMF (Standard MIDI files: .MID/.KAR), Cakewalk (.WRK), and Overture (.OVE) file formats. A multiplatform realtime MIDI I/O library is also provided with various output backends, including ALSA, OSS, Network and FluidSynth.

This package provides the LV2 plugin "GxVoodooFuzz", a simulation modelled after the Voodoo Lab SuperFuzz pedal. It's basically a Bosstone circuit, followed by the tone control of the FoxToneMachine in parallel with a DarkBooster, followed by a volume control.

abjad-ext-rmakers includes a collection of classes for creating and and manipulating rhythms such as accelerandi, taleas, and more.

mididings is a MIDI router/processor based on Python, supporting ALSA and JACK MIDI. Features include:

• MIDI routing and filtering; filter events depending on their event type, channel, note number, velocity, etc., and freely route them between an arbitrary number of input and output ports.

• Modifying and converting MIDI events; transpose notes, apply velocity curves, change controller values and ranges, or convert events to any other MIDI event type. mididings also includes more complex functions like a diatonic harmonizer, floating split points, latched notes, and more.

• Seamless switching between patches; set up different "scenes", each with its own MIDI routing and processing, and switch between them at any time, even while playing. Switching scenes does not affect notes already held, and does not result in dropouts or stuck notes!

• MIDI event monitoring, running external commands; print MIDI event data to the console to help debugging your patches and configuring your MIDI controllers. In addition to its MIDI output, mididings can also execute shell commands and send OSC or DBUS messages.

Luppp is a music creation tool, intended for live use. The focus is on real time processing and a fast and intuitive workflow. With extensive MIDI mapping support, you can get looping just how you like!

Synthesis ToolKit in C++ (STK) is a set of audio signal processing and algorithmic synthesis classes written in C++.

This package also provides its demo project, examples, ElectricGuitar, RagaMatic and Effects.

pysmf is a Python extension module for reading and writing Standard MIDI files, based on libsmf.

This package provides the LV2 plugin "GxPushPull", a simulation of a push pull transistor fuzz effect with added high octave.

MusE is a MIDI/Audio sequencer with recording and editing capabilities. Its audio sequencer supports the LADSPA, DSSI, and LV2 audio plugin formats; the MIDI sequencer provides a piano roll, a drum editor, a list view, and a score editor. MusE aims to be a complete multitrack virtual studio.

Libpd provides Pure Data as an embeddable audio synthesis library. Its main purpose is to liberate raw audio rendering from audio and MIDI drivers.

GNU LilyPond is a music typesetter, which produces high-quality sheet music. Music is input in a text file containing control sequences which are interpreted by LilyPond to produce the final document. It is extendable with Guile.

XUiDesigner parses an LV2 plugin's ttl file and generates the needed controller widgets. The created GUI can be saved as UI-Bundle, which then could be built and installed. For later editing of the UI, a JSON file is added, which you could load per drag 'n drop into XUiDesigner.

Ninjas 2 is a rewrite of the Ninjas sample slicer audio plugin. Its goal is to be an easy to use sample slicer with quick slicing of samples and auto-mapping slices to MIDI note numbers.

This package contains data files for use with Le Biniou.

klick is an advanced command-line based metronome for JACK. It allows you to define complex tempo maps for entire songs or performances.

Quod Libet provides several ways to browse and view your local music library, along with flexible search capabilities. It includes a tag editor, which can also be invoked as a standalone program, and further supports streaming audio and feeds (such as podcasts).