The cool thing about shows like these is that many of the sets are completely improvised; regardless of whether or not you've heard of a given performer, everyone in the room is hearing the material being performed for the first time.
I thought Tony Conrad was a household name at this point?
And Mr. Marshmallow, you saw Chris Corsano play drums for Bjork at Coachella.
And I'm pretty sure Martin Schmidt is 1/2 of Matmos.