Went to see Fred Frith perform Christian Marclay's 'Chalkboard'.
It's (surprise, surprise) a huge chalkboard onto which the museum's visitors have written and drawn all kinds of stuff.
It was then divided into eight sectors and Frith played music inspired by what was on there.
I couldn't care less about the whole concept behind it, but it was a pretty amazing concert.
Not that different from other Frith concerts I've been to, but the separation into eight pieces was unusual.
It was also fun sitting right next to and gradually moving through the room with him.