Show-off my open-source stuff, mostly of the Linux Audio/MIDI genre

Qtractor 0.9.26 - A Spring'22 Release batch #3

Wholly greetings, one third time and finally,

Qtractor 0.9.26 (spring'22) is released!


  • Main application icon is now presented in scalable format (SVG).
  • Have even more tolerance to JACK buffer-size changes, prompting for a complete session reload, only when exceeding the double of the previous/current size.
  • Added an additional status-bar label to show the session current buffer-size (in frames per period).
  • Migrated command line parsing to QCommandLineParser/Option (Qt >= 5.2)
  • Make last recorded clip current and suitable target for immediate loop recording takes switch or navigation.
  • Number of takes is now shown on clip titles and tooltips.
  • Fixed in-flight transport mode changes.
  • Fixed translations path to be relative to application runtime.


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Wiki (severely outdated; help wanted, desperately!):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

Keep the fun, make some noise, and if that fails, make some music!

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Vee One Suite 0.9.25 - A Spring'22 Release batch #2

Greetings again!

The Vee One Suite of old-school software instruments,

  • synthv1 as a polyphonic subtractive synthesizer;
  • samplv1 a polyphonic sampler synthesizer;
  • drumkv1 as yet another drum-kit sampler;
  • padthv1 a polyphonic additive synthesizer.

Are now being released as the second batch of the so called QStuff* (northern) Spring'22 season.

The QStuff* Spring'22 Release batch #1


The first batch of the QStuff* is ready: QjackCtl, Qsynth, Qsampler, QXGEdit, QmidiCtl and QmidiNet, are all out for the (northern) Spring'22 season.

Qsynth 0.9.6 - A Mid-Winter'22 Release

Hi all,

Qsynth - A FluidSynth Qt GUI Interface

Qsynth 0.9.6 (mid-winter'22) is out!

Qsynth is a FluidSynth GUI front-end application written in C++ around the Qt framework using Qt Designer.


  • Migrated command line parsing to QCommandLineParser/Option (Qt >= 5.2; by Pedro Lopez-Cabanillas).
  • New option to change the UI language translation.
  • Added DLS file type to the soundfonts selection dialog.
  • Fixed translations path to be relative to application runtime.

Qtractor 0.9.25 - A Winter'22 Release batch #3

Hi everybody,

Qtractor 0.9.25 (winter'22) is released!


  • Hopefully fixed an old MIDI off-timing bug noticeable only when exporting (Track/Export Tracks/Audio...) on large buffer-sizes (>= 2K frames/period).
  • Clip/File Loop Set menu command is now a toggle.
  • Fixed problem with punch-in/out and loop-recording being lost when stopping the play-head right after and between the loop-start and punch-in points, even though at least one cycle or take is through.
  • Dropped autotools (autoconf, automake, etc.) build system.
  • A more verbose warning question is issued, on whether to continue saving to an existing zip/archive directory and accept to replace and erase all its current data in the future.
  • Fixed potential crash on session close or application exit, when some plugins have been removed.


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