buzztrax binary package in Ubuntu Bionic s390x

 Buzztrax aims to be a music studio that allows one to compose songs using
 only a computer with a soundcard. If you’ve used tracker programs like
 FastTracker, Impulse Tracker, or the original AMIGA SoundTracker, that will
 give you an idea of how one can sequence music in Buzztrax. The Buzztrax
 editor uses a similar concept, where a song consists of a sequence with
 tracks and in each track one uses patterns with events (musical notes and
 control changes). In contrast to other Tracker programs, tracks are not
 simply sample players: a user can make a song using an arrangment of virtual
 audio plugins that are linked together to create different effects. Each of
 these machines can be controlled realtime or via patterns in the sequencer.

Source package