He started taking requests, and I, in the very back, hollered, "4'33"!"
The whole audience were all music majors like me, who had to be there, and the guy sucked. So that got a good laugh.
Much to our relief, he ended the gig early.
I just remembered, this guy actually broke several strings in one of our two Steinway grand pianos. Pissed off Dr. Marchionni, that was his favorite piano.