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Advanced GTK+ Sequencer
Advanced GTK+ Sequencer (AGS) is intended to use for music composition.

It features a piano roll, as well a synth, matrix editor, drum machine, soundfont2 player, mixer and an output panel. It's designed to be highly configurable. You may add effects to its effect chain; and add or remove audio channels/pads. You may set up a fully functional network of engines, thus there is a link editor for linking audio lines. AGS requires a realtime kernel and ALSA support. AGS uses conditional locks to keep several threads in sync that's why you need at least a preemptable kernel.

LADSPA support has been added to version 0.4.2 as well export to WAV.

Version 0.5.x brings you first concurrent audio tree processing support.

Version 0.6.x is dedicated to accessibility. You might control GSequencer by keyboard. As you move to a note it provides you an audible feedback.


Documentation included. A reference manual is also on-line.


LicenseVerified byVerified onNotes
GPLv3orlatergenium31 July 2014

Leaders and contributors

Joël Krähemann (Jkraehem)maintainer

Resources and communication

Audience Resource type URI
User Download
Developer Mailing List Subscribe
User Mailing List Subscribe
User & developer Bug Tracking
Developer VCS Repository Webview

Software prerequisites

Kind Description
Required to use libinstpatch-1.0 Sound file container supporting DLS, Soundfont2 and GigaSampler
Required to use libsndfile-1.0 Audio file input and output, supporting FLAC, WAV, ...
Required to use libao4 Cross-platform output to soundcard
Required to use gtk+-2.0 Gimp toolkit widget library
Required to use alsa-lib Advanced linux sound architecture library
Required to use libxml2 XML and XPath library
Weak prerequisite LADSPA Audio plugin format
Required to use libuuid-1.2 Unique identifier creation library

This entry (in part or in whole) was last reviewed on 14 September 2015.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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