By Steve Newton Back on June 20, 2014, any hardcore '70s-rock fans in attendance at the Firefly Festival in Dover, Delaware, got a special treat when the Foo Fighters went back in time to raunch out a bit. "Lemme tell ya something," said Dave Grohl near the end of his band's headlining set, "we're gonna … Continue reading That time the Foo Fighters turned into bar band the Holy Shits and raunched out on early Van Halen