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qsynth is a qt fluid synth front end. It's a midi piano program to make sounds.

root # emerge qsynth fluid-soundfont

sound fonts are located:

  • /usr/share/sounds/sf2/FluidR3_GS.sf2
  • /usr/share/sounds/sf2/FluidR3_GM.sf2

start qsynth as root

  • setup > midi tab > midi driver > alsa_seq
  • setup > audio tab > audio driver > jack
  • setup > soundfonts tab > open > load in /usr/share/sounds/sf2/FluidR3_GM.sf2

restart qsynth as root, connect keyboard via qjackctl connect dialogs, and you're ready to play.


the channels button is where you configure what sound font bank is playing, and on which channel. ie piano channel 1 harpsichord channel 2.

as this is an audio program we wish to enable real time priorities:

root #echo "@audio          -       rtprio          99" >> /etc/security/limits.conf