Skip to content


Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?


Failed to load latest commit information.
Latest commit message
Commit time

Hydrogen drum machine

AppVeyor Build Status Packaging status

Hydrogen is an advanced drum machine for GNU/Linux, Mac and Windows. Its main goal is to bring professional yet simple and intuitive pattern-based drum programming.

Official Website:



  • Very user-friendly, modular, fast and intuitive graphical interface based on QT 5.
  • Sample-based stereo audio engine, with import of sound samples in wav, au and aiff formats
  • Support of samples in compressed FLAC file.
  • Separate command-line interface (h2cli)

Sequencer and mixer

  • Pattern-based sequencer, with unlimited number of patterns and ability to chain patterns into a song.
  • Up to 192 ticks per pattern with individual level per event and variable pattern length.
  • Unlimited instrument tracks with volume, mute, solo, pan capabilities.
  • Multi layer support for instruments (up to 16 samples for each instrument).
  • Sample Editor, with basic cut and loop functions.
  • Time-stretch and pitch functions via rubberband cli.
  • Playlist with scripting support
  • Advanced tap-tempo
  • Director Window with a visual metronome and song position tags
  • Timeline with variable tempo
  • Import/Export single patterns
  • Midi-Learn functionality for many gui elements
  • Multiple patterns playing at once.
  • Ability to import/export song files.
  • Unique human velocity, human time, pitch and swing functions.

Other features

  • JACK, ALSA, PulseAudio, PortAudio, CoreAudio and OSS audio drivers.
  • ALSA MIDI, JACK MIDI, CoreMidi and PortMidi input with assignable midi-in channel (1..16, ALL).
  • Import/export of drumkits.
  • Export song to wav, aiff, flac or file.
  • Export song to midi file.
  • Export song to LilyPond format.


Expand to view Hydrogen screenshots

Hydrogen Main Window


Hydrogen File Browser


Hydrogen Sample Editor


Hydrogen Sound Library



More details in the file.

Packaging Status

Expand to see the status of Hydrogen in the package ecosystem

Packaging status


GPLv2+ (more details in the COPYING file.)

Happy drumming! 😃