so-synth-lv2 1.4-2 (amd64 binary) in ubuntu bionic

 This package is an unofficial port of a set of synthesizers
 written by 50m30n3 to the LV2 plugin format. In order to use
 it, you need a host for LV2 plugins such as Ardour, Qtractor,
 or Ingen. This package contains three synthesizers, a feedback
 drone synthesizer, a piano synthesizer, and a bassline synthesizer.