Elvis Perkins with Dearland

This group rocks! I saw 'em on David Letterman last night and they were wicked. Elvis Perkins started out on the stage alone singing with his guitar. As additional instruments were added to the song the musician joined Perkins on stage. First a bass player. This was followed by the drummer. Next, a harmonium. And finally a trumpet. It was a really fun stage show.

Here's the song they played:
While you were sleeping

Here's the clip: