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Advanced GTK+ Sequencer
Audio sequencer

Gsequencer-main-window.png Gsequencer-automation-window.png

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. Further it has LADSPA, DSSI and Lv2 plugin support. 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.

Version 0.7.x gives you the benefit of providing the libraries libags, libags-thread, libags-server, libags-audio and libgsequencer. It contains for now an automation editor. Open Sound System (OSS4) and JACK Audio Connection Kit support has been added recently. Now you may configure multiple soundcards. Since 0.7.111 there is MIDI input available. Let you record your MIDI instrument and doing live performance.

Version 0.8.x extended MIDI support to import/export SMF. A built-in envelope editor and additional editing functionality like move/crop selected notes.


Documentation included. A reference manual is also here:



Verified by

Verified on


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Verified on

31 July 2014

Leaders and contributors

Joël Krähemann (Jkraehem)maintainer

Resources and communication

AudienceResource typeURI
DeveloperVCS Repository Webview
Debian (Ref) (R)
Savannah (Ref) (R)

Software prerequisites

Required to usegtk+-2.0 Gimp toolkit widget library
Required to usePulseaudio
Weak prerequisiteLADSPA Audio plugin format
Required to uselibxml2 XML and XPath library
Weak prerequisiteDSSI Instrumentation plugin format
Required to uselibuuid-1.2 Unique identifier creation library
Weak prerequisiteLv2 Audio plugin format
Required to uselibinstpatch-1.0 Sound file container supporting DLS, Soundfont2 and GigaSampler
Required to useJack Jack Audio Connection Kit
Required to uselibsndfile-1.0 Audio file input and output, supporting FLAC, WAV, ...
Required to usegettext
Required to usealsa-lib Advanced linux sound architecture library

This entry (in part or in whole) was last reviewed on 19 February 2018.


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Date 2015/08/14
Source debian
Source link


Date 2017/03/18
Source fedora
Source link


Date 2017/10/07
Source opensuse
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