Just some info in case you have missed it:
The Linux repos include an app called "Bristol" which is a Synth Emulator for about 20+ classic synths (see link, below 1-its sourceforge main page and 2-its first Synth)
They can all be controlled via midi on both alsa and Jack if set up correctly.
Personally not a Synth player, I have still always been blown away by this program's possibilities.
May you enjoy it and beautiful music issue from yr of fingers,
[link Bristol Synth Emulator on Sourceforge](link http://bristol.sourceforge.net/)
2-[link "Mini Moog (-mini) (1970/1977)"](link http://bristol.sourceforge.net/mini.html)