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Qtractor 0.9.28 - A Late-Summer'22 Release


Qtractor 0.9.28 (late-summer'22) is released!


  • Complete overhaul of the current host time(base)/BBT information delivered to plug-in types that matter: VST, VST3, CLAP and LV2.
  • Improved key-signature editing and display on Tempo Map / Markers (time-scale) management dialog.
  • Fixed plugin selection, when creating and switching initial track type, from audio to MIDI and vice-versa.
  • Fixed typos and updated some old MIDI GM2 Controller names.
  • Add current system user-name to the singleton/unique application instance identifier (when explicitly opted in at build configure time).


Qtractor is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework. Target platform is Linux, where the Jack Audio Connection Kit (JACK) for audio and the Advanced Linux Sound Architecture (ALSA) for MIDI are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio.


Project page:


Git repos:

Wiki (severely outdated; help wanted, desperately!):


Qtractor is free, open-source Linux Audio software, distributed under the terms of the GNU General Public License (GPL) version 2 or later.

Make some noise, have fun or else, make some music!

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