The main goal of liquidsfz is to provide an SFZ sampler implementation library that is easy to integrate into other projects. A standalone JACK client and an LV2 plugin is also available.

Le Biniou is a music visualization & VJing tool. It creates live visuals based on audio performances or existing tracks.

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

The VL1-Emulator is an emulator of Casio VL-Tone VL1, based on source code by PolyValens, offered as an LV2 plugin and a standalone JACK application.

DUMB is a tracker library with support for IT, XM, S3M and MOD files. It targets maximum accuracy to the original formats, with low-pass resonant filters for the IT files, accurate timing and pitching, and three resampling quality settings (aliasing, linear interpolation and cubic interpolation).

FMIT is a graphical utility for tuning musical instruments, with error and volume history, and advanced features.

abjad-ext-nauert provides classes for dealing with composer and music theorist Paul Nauert's quantization grids or Q-Grids, for short.

Pragha is a lightweight music player based on Gtk and sqlite. It is constructed to be fast, light, and simultaneously tries to be complete without obstructing your daily work.

Music21 is a set of tools for helping scholars and other active listeners answer questions about music quickly and simply.

Music player with support for most common audio formats, and plugins for various additional features such as visualization, effects and online service integration. In addition to a Qt-based interface it supports Winamp/XMMS skins.

Zam plugins is a collection of audio processing plugins in the LADSPA, LV2 and VST2 formats, as well as standalone JACK versions. The collection includes ZaMaximX2, ZamAutoSat, ZamComp, ZamCompX2, ZamEQ2, ZamGEQ31, ZamHeadX2, ZamPhono, ZamGate, ZamGateX2, ZamTube, ZamDelay, ZamDynamicEQ, ZaMultiComp, ZaMultiCompX2 and ZamSynth.

GNU Denemo is a music notation editor that provides a convenient interface to the powerful music engraving program Lilypond. Music can be typed in using the computer keyboard, played in using a MIDI keyboard, or even input via a microphone connected to the sound card. The final product is publication-quality music notation that is continuously generated in the background while you work.

Sfizz provides an SFZ parser and synth C++ library. It includes LV2 plugins and a JACK standalone client.

pianobar is a console-based music player for the personalized online radio pandora.com. It has configurable keys for playing and managing stations, can be controlled remotely via fifo, and can run event-based scripts for scrobbling, notifications, etc.

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

This package provides LV2 audio utility plugins, such as filters, crossovers, simple gain plugins without zipper noise, switch box plugins, a switch trigger, a toggle switch, and a peakmeter.

This is the continuation of the official Discogs API client for Python. It enables you to query the Discogs database for information on artists, releases, labels, users, Marketplace listings,and more. It also supports OAuth 1.0a authorization, which allows you to change user data such as profile information, collections and wantlists,inventory, and orders.

Synthv1 is an old-school subtractive polyphonic synthesizer with four oscillators and stereo effects.

B.Jumblr is a pattern-controlled audio stream / sample re-sequencer LV2 plugin.

This package provides the LV2 plugin "GxToneMender", a clean boost effect with a 3-knob tonestack.

Petri-Foo is a fork of the Specimen sampler project intended to run under a JACK session.

The MusicBrainz Client Library (libmusicbrainz), also known as mb_client, is a development library geared towards developers who wish to add MusicBrainz lookup capabilities to their applications.

Midicsv reads a standard MIDI file and decodes it into a comma-separated value file (CSV), which preserves all the information in the MIDI file. The ASCII CSV file may be loaded into a spreadsheet or database application, or processed by a program to transform the MIDI data (for example, to key transpose a composition or extract a track from a multi-track sequence). A CSV file in the format created by midicsv may be converted back into a standard MIDI file with the csvmidi program.

Fluida is an audio plugin in the LV2 format that acts as a frontend for fluidsynth.