Band plots massive one-day festival featuring Queens of the Stone Age, Cage the Elephant, more
'Pieces of You' singer rocks out to "Whole Lotta Love" in Phoenix
"Sometimes, I'll ask [subjects] a question and tell them, 'Just so you know, I don't know what the fuck I'm talking about,'" says Foo Fighters singer
Dave Grohl's HBO musical travelogue will be preceded by first single "Something From Nothing"
'This is a musical map of America,' Dave Grohl says in the trailer