Go listen to the mashup on the Polyphonic Spree website (it's the music that starts playing once the ridiculous flash loads), imagine 23 people on stage in robes with random instruments, and then tell me why you don't already have tickets to see them. They'll be in D.C. June 30th, San Francisco July 17th, and - whaddya know, those punks are skipping Madison. But they'll be in Milwaukee July 9th, and if you really liked wacky rocky-choiry music, you'd go. Oh, yes, you would.
They're playing Chicago, too, but only as part of Lollapalooza, so, eh.