Michael N. Todaro / Jason Merritt / Larry Busacca, Getty Images The ‘Sound City’ documentary gave Dave Grohl a chance to work with a who’s who of music, while also showcasing the legendary Sound City studio and using the board that’s been responsible for creating so many great albums. Among Grohl’s collaborators were Paul McCartney and Corey Taylor , who appear on the first two singles from the ‘Sound City’ soundtrack, and the musician-turned-director has spoken more about both pairings. Joining Taylor on Los Angeles’ ‘ Kevin & Bean ‘ morning show, Grohl stated that he was a little starstruck by his ‘ From Can to Can’t ‘ collaborator. He explains, “When I first met [ Slipknot ‘s] Corey [Taylor] or the guys from Black Rebel Motorcycle Club, those are bands that I really love and I spent a lot of time listening to their music and when you meet that person in the flesh, you get a little nervous.” As for Taylor and his take on working with Grohl, the singer explained, “You want to talk about a checkmark off my bucket list, I’ve been wanting to work with Dave forever. When he invited me to be a part of this movie, it was like, ‘Oh, by the way, I’ve got this music, would you like to put this together?,’ and I just went, ‘(scream) Duh, I’m already in the car on my way.’” Arguably the biggest name on the album is Paul McCartney, and Grohl considers himself lucky to have ingratiated himself over the years to where he can just call the musician. Of the collaboration on ‘ Cut Me Some Slack ,’ Grohl recalls, “As we were filming all these performances, I was like, ‘Hey dude, why don’t you come down and jam?’ He’s like, ‘OK.’ So he comes down and brings THE BASS that he’s played for 40 years and the Les Paul that there’s only four of in the world and then he brings this guitar made out of a cigar box. It’s called a Cig Fiddle, and he’s like, ‘Oh, I think I’ll play this. Why don’t you go play the drums?’ … and we just jammed. We wrote this song in about an hour and we recorded it.” He added that it was McCartney that spurred the decision to debut it at the 12-12-12 benefit concert, suggesting that they play the song that he and Krist Novoselic and Pat Smear had jammed out eight months prior. One thing that’s a common denominator in how records were made at Sound City and for the movie’s soundtrack was the human element. Grohl says, “[What it’s all about is] the human element of music and what it’s like to just get together with a person and write a song in a room in a day and it doesn’t have to be perfect, but that’s how the magic happens.” The ‘Sound City’ documentary made its debut at the Sundance Film Festival  Friday night (Jan. 18) and the movie will screen in theaters  beginning Jan. 31. [button href=”http://loudwire.com/dave-grohl-sound-city-documentary-cast-soundtrack-details/” title=”Next: See the ‘Sound City’ Cast + Soundtrack Contributors” align=”center”]