hey @Jedi_Appr0_0, some kind of Kaossilator control of KS37 should be possible, but it depends what you want to achieve precisely and what “play” means in the context of KS37!
For example, I read that Kaossilator can be configured up to send MIDI notes and KS37 will treat them as if you were pressing those keys:
so KS37 might send them out scaled to, say, the Blues Scale, or play an arpeggio based on the notes.
Obviously, you’d need some synth/sound device downstream from the KS37.
As KS37 can easily be set to a different channel you might need to check in MIDI Monitor that it matches the Kaossilator channel❖
❖ don’t own Kaossilator, but I’ll let you know about incoming matching KS37 current channel if curiosity overwhelms