[title of show] is a play about writing a play--the show you're watching is the show they're writing as you watch them. It's very metatheatrical. Arizona Theatre Company did it last year, and I found it quite entertaining.
"Die Vampire, Die", below, has nothing to do with Twilight and is my favorite song from the show. If you've ever been insecure about your art (or anything, really), I strongly suggest giving it a listen (only if you're fine with hearing "fuck" several times, though).