Tenacious D, Grohl, Homme Do Somersaults, Invoke Satan For Hurricane Relief

Hollywood concert also features comedians David Cross, Sarah Silverman.

Foo Fighter Dave Grohl Says Physical Graffiti Was Model For New LP

Album includes both 'super heavy' and 'delicate' songs.

Dave Grohl Reveals Details About Foo Fighters Double Album

In Your Honor slated for June release; world tour in the works.