Back in February, after winning four Grammys during the pre-televised ceremony (and before winning one more — and locking up MVP honors — during the show itself), Foo Fighters frontman Dave Grohl spoke to MTV News on the red carpet about his plans to honor the late, great Sound City studio with both a documentary and an album.

"There used to be a recording studio called Sound City that was in the San Fernando Valley. Nirvana recorded there in 1991. It was this really beautiful dump in the middle of a warehouse district. A lot of great records were made there," he said. "Fleetwood Mac made records there, Neil Young made records there, Tom Petty, Cheap Trick, Dio, Ratt, Pat Benetar ... so I interviewed them to tell the history of the studio, but then I invite them back to record with me, and we make a record."

At the time, there was little more than a teaser trailer for the "Sound City" doc, but late Tuesday, Grohl expanded his mission statement for the film, announcing that he'd serve as both director and producer (he also purchased a vintage recording console from the studio) and releasing a handwritten note that let it be known this is definitely a passion project.

"In the spring of 1991, I packed all of my belongings into an Army Surplus duffle bag, put my drums in some dusty road cases, rolled up my sleeping bag and jumped into an old, beat-up Ford van headed down to Los Angeles from Seattle," Grohl wrote. "I was a 22-year-old starving musician without a cent to my name or a place to call home. My destination: Sound City.

"The following three weeks changed my life forever. 'Sound City' is a film about America's greatest unsung recording studio. Deep in California's sun-burnt San Fernando Valley, tucked away behind train tracks and dilapidated warehouses, it was the birthplace of legend," he continued. "It was witness to history. It was home to a special few, intent on preserving an ideal. An analog church, a time capsule. The last bastion of a craft defied by technology. It was rock and roll hallowed ground. And it was our best-kept secret. Now I want to tell its story."

Dang. If that doesn't get you fired up, we don't know what will. There's still no firm release date for the "Sound City" doc, though it will be distributed by Roswell Films, a division of the label that releases all the Foos' music.

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