Hydrogen (software)

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Hydrogen logo
Hydrogen screenshot
Developer(s) Alessandro Cominu
Stable release 0.9.6 / August 3, 2014 (2014-08-03)
Written in C++, Qt
Operating system Linux, Mac OS X
Type Drum machine
License GNU General Public License
Website www.hydrogen-music.org

Hydrogen is an advanced drum machine created by Alessandro Cominu, an Italian programmer who goes by the pseudonym Comix.[1] Its main goal is to provide professional yet simple and intuitive pattern-based drum programming.

Hydrogen was originally developed for Linux, but later ported to Mac OS X. Support for Microsoft Windows seemed to have been abandoned, since the last build dated to 2006 for 4 years,[2] but a Microsoft Windows port exists as a snapshot of the upcoming 0.9.6 version, indicating that the operating system is likely to be supported in the future.[3] The graphical user interface for the application uses Qt library. All code is released under the GNU General Public License. Hydrogen is free software.


  • Pattern-based sequencer, with unlimited number of patterns and ability to chain patterns into a song.
  • Up to 64 ticks per pattern with individual level per event and variable pattern length.
  • 32 instrument tracks with volume, mute, solo, pan capabilities.
  • Multi-layer support for instruments (up to 16 samples for each instrument).
  • Ability to import/export song files.
  • Support for LADSPA effects.
  • Real-time slide control for swing.
  • Option to slightly randomize velocity, time, pitch and swing functions to give a more "human" playback.
  • Multiple patterns playing at once.
  • GMkit, the drum kit features: Kick, Stick, Snare Jazz, Hand Clap, Snare Rock, Tom Low, Closed HH (high hat), Tom Mid, Pedal HH (high hat), Tom Hi (high), Open HH (high hat), Cowbell, Ride Jazz, Crash, Ride Rock, and Crash Jazz.[4]

See also[edit]


  1. ^ Cominu, Alessandro. "Alessandro Cominu's Sorceforge User Page". Sourceforge user page. Sourceforge. Retrieved 11 September 2011. 
  2. ^ "Hydrogen | advanced drum machine for GNU/Linux". Hydrogen-music.org. Retrieved 2013-01-13. 
  3. ^ "Hydrogen - Browse Files at". Sourceforge.net. Retrieved 2013-01-13. 
  4. ^ Adam Overa (2011-03-02). "Software Instruments : Tom's Definitive Linux Software Roundup: Audio Production". Bestofmedia. Retrieved 6 June 2011. 

External links[edit]