Half an hour of doing very little, and you can fall asleep instantly for the rest of the day? I don't think so. Not even I get tired that fast.:P
Also, aren't mudokons heavily oppressed? What chance does that give them to make a band that will actually sell?
But Oddworld is odd, so maybe.
Not to mention, for someone like you with enourmous amounts of creativity, I have yet to see one original instrument for this fan-fic. I think you should.