For months, Foo Fighters main man Dave Grohl has been talking up his [article id="1679341"]"Sound City" documentary[/article], even penning a de facto [article id="1684317"]mission statement[/article] extolling the virtues of the late, great California studio from which the film takes its name.

Now, in a

target="_blank">new trailer, he's letting others do the talking.

Tom Petty, Trent Reznor, Mick Fleetwood, John Fogerty and producer Butch Vig -- all of whom recorded at the studio, or worked on its analog, tube-driven AMG Neve console (which Grohl purchased after Sound City closed) -- show up in the clip, reminiscing about making albums there, and echoing Grohl's reverent tones about the space.

"Sound City, that's it, man," Tom Petty says in the clip. "That room really did sound just incredible."

"That board, that room, that is Sound City," Fleetwood adds.

And though Grohl is largely absent in the new trailer (he's only seen playing drums during a jam session), he's still subtly involved: At the end of the clip, a phone number flashes on screen -- 855-SND-CITY -- and when dialed, a familiar voice greets callers with "Thank you for calling Sound City." After pressing certain keys, Grohl can be heard reading his mission statement, or launching into a raucous jam with a shouted "1-2-3-4, 1-2-3-4!"

Back in February, Grohl spoke to MTV News about the film -- and the laundry list of amazing records made at Sound City -- and added that he's also contemplating releasing an album featuring him and some of the names that recorded at the studio.

"Fleetwood Mac made records there; Neil Young made records there. Tom Petty, Cheap Trick, Dio, Ratt, Pat Benatar, Rick Springfield, Rage Against the Machine did their first record there, Nine Inch Nails, Metallica ... Evel Knievel, Charles Manson recorded there, Barry White, Johnny Cash," he said. "So I interview them to tell the history of the studio, but then I invite them back to record with me, and we make a record."

There's still no release date for the "Sound City" doc, which will be released through Grohl's own Roswell Films, though it is apparently "coming soon." For more information (and to play around with a virtual Neve console), check out the official "Sound City"

site.