Here Comes the Foo: Paul McCartney plays drums of Foo Fighters album “Concrete and Gold”

ABC/Fred Watkins; Mary McCartney/MPL CommunicationsWhen Foo Fighters first announced their new album Concrete and Gold earlier this summer, Dave Grohl described the record as “Motorhead‘s version of Sgt. Pepper.” As it turns out, Concrete and Gold features an actual BeatlePaul McCartney.

In a new interview with ET Canada, Grohl reveals that McCartney “plays drums on one of our songs.” Adds the Foo frontman, “He’s a pal. We’ve known him for a long [time]. He’s great. He’s the most wonderful person in the world. He’s a great guy.”

Grohl and McCartney previously worked together on the song “Cut Me Some Slack,” which also featured Nirvana bassist Krist Novoselic and Foo guitarist Pat Smear. The track, which features Grohl on drums, appears on the soundtrack to Dave’s 2013 documentary Sound City.

Oddly enough, Sir Paul isn’t the secret “biggest pop star in the world” who sings backing vocals on a Concrete and Gold song, which has been the cause of much speculation. Grohl has denied that the mysterious guest is Adele or Taylor Swift, but he won’t reveal the star’s identity.

Among the guests that will be on Concrete and Gold include Alison Mosshart of The Kills and The Dead Weather, and Shawn Stockman of R&B group Boyz II Men. The album will be released September 15.

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