Foo Fighters’ frontman Dave Grohl has nothing but warm feelings for his latest collaborator, the one and only Sir Paul McCartney!

In an interview with the radio station KROQ (via NME), Grohl used the words "sweetest," "nicest," and "most awesome," to describe the former Beatle.

And the two obviously have some serious chemistry in the studio, as they recently wrote and recorded the single – ‘Cut Me Some Slack’ – in just three hours.

Grohl said of the experience, "We walked in; we jammed the song. It just came out of nowhere. The best songs happen that way. We recorded it live and put a vocal over it and that was it."

The song was later unveiled at the 12-12-12 benefit concert for Hurricane Sandy relief. "Cut Me Some Slack" also includes the talents of former Nirvana members Krist Novoselic (bass) and Pat Smear (guitar) and is set to appear on the soundtrack to Sound City – Grohl's documentary about the iconic California recording studio of the same name.

Another recent single from the soundtrack is ‘From Can to Can’t; a collaboration between Grohl and Skipknot/Stone Sour's Corey Taylor that was just released yesterday (January 16th).

Grohl’s supergroup, the Sound City Players, have a gig coming up as part of Sound City's premiere at the Sundance Film Festival on January 18th and an additional show on January 31st at Los Angeles’ Hollywood Palladium.

For more on this story, head to NME.com and check out both singles from the Sound City soundtrack below!