Foo Fighters frontman Dave Grohl is working on a documentary about the ledendary Sound City Studios in L.A.  Many iconic albums were recorded there (Nirvana's "Nevermind", Fleetwood Mac's "Rumours" and even a few Charles Manson tunes) and Dave is determined to tell the studio's unsung story.  Gillian Pensavalle can't wait to see what he comes up with.