WATCH Danny Elfman rock out w/ The Simpsons

Danny Elfman has created most of TV and movies most iconic music. None more iconic than his theme for some show called The Simpsons.

On this very quiet morning for ABW...

Former Oingo Boingo frontman Danny Elfman appeared on stage at Coachella with guitar in hand playing a bunch of his own songs and themes he composed throughout his long Hollywood career.

But the showstopper was this: an extremely loud and extreme version of The Simpsons theme (for which he's been collecting royalty ch…