Here is the video of Steven kay playing on Neko with Karma integrated.

http://www.youtube.com/watch?v=4wf34ljSSRA&hl=nl

Since you can setup KARMA to follow chords, and there are 32 scenes, i think with a lot of programming you could even use it as an arranger, programming the different scenes as fills, ending and variations...

But even without that, KARMA feels like such a wonderfull toy.