The experimental electronic group Matmos (who toured with Bjork when I saw her and did all her beats live) did a crazy public program where they performed live and let people come in and hang out and have songs made about them. Strange and awesome.
My friend Joe went and took these pictures, as well as the video clip of one of the Matmos members playing the banjo and a floor cymbal:
http://www.kvalda.com/matmos.htmlHere's the article about the whole public show/program:
http://www.brainwashed.com/matmos/news.html