Dave Grohl and the Foo Fighters perform at the Democratic National Convention at the Time Warner Cable Arena in Charlotte, No
ROBYN BECK

While we still fly off the release of "From Can to Can't," Dave Grohl's collaboration with Slipknot's Corey Taylor for his upcoming documentary Sound City, the duo stopped by L.A. radio station KROQ to share details on the upcoming documentary. The whole thing's worth a watch, but if you need the Cliffs Notes version, we got you:

It Looked Disgusting
Grohl spoke to more than 40 artists for the documentary and all except one were disgusted by the dirty brown shag carpeting and "grotesque studio couch." The contrarian? Fleetwood Mac's Mick Fleetwood, who originally met members Stevie Nicks and Lindsay Buckingham at the studio.

Grohl Bought Out the Studio's Equipment
After Nirvana used a one-of-a-kind mixing board to record Nevermind, Grohl purchased it after the studio closed to put in his own home studio. “No two albums sound the same coming out of that board because of the different love that you put into it, the different variables,” said Taylor.

Paul McCartney Is the Greatest Person Ever
According to Grohl, McCartney is “just the sweetest, nicest, most awesome person." For the Macca/Grohl/Krist Novoselic collaboration "Cut Me Some Slack," Grohl said it was more instinct than planning. “We walked in; we jammed the song. It just came out of nowhere. The best songs happen that way,” said Grohl. “We recorded it live and put a vocal over it and that was it. It was three hours and it was perfect.”

Grohl Is Not A Fan of American Idol
“All of us come from the same place,” said Grohl. “We were kids that bought instruments at a yard sale and then we started a band in a garage. We sucked and then we became the biggest band in the world. That’s how it happens. You don’t stand in line to be on a TV song contest show.”

The Point of Sound City is to Pay It Forward
Grohl said that “the intention of the movie is really to inspire the next generation of kids to appreciate the simple human quality of music. You don’t have to do the TV show; you don’t have to be perfect. Pick up and guitar and suck and it’s the best feeling in the world until you become good and then you’re the biggest band in the world.” No word yet if "Pick up the Guitar and Suck" will be the name of an upcoming rock autobiography, but we're just gonna throw that out there and see if it sticks.