"I read something that the creator of Glee was mouthing off about some friends of mine in rock bands and I just felt like, as a musician, you should be able to say, 'No... I don't wanna do your show'... Why should you have to say, 'OK, Glee, take my song and turn it into a f**king musical'?" Foo Fighters star Dave Grohl stirs up the feud between himself and Glee creator Ryan Murphy.