Dave Grohl revealed that Justin Timberlake is the long-hyped mystery “pop star” collaborator featured on the Foo Fighters‘ upcoming ninth LP, Concrete and Gold

Grohl detailed this unexpected collision of hard-rock and mainstream pop in Rolling Stone‘s new, in-depth cover profile, noting that Timberlake often hung out with the band during downtime between their respective recording sessions at L.A.’s EastWest studios.

“We’d drink whiskey in the parking lot,” said the Foo Fighters frontman. “He was really, really cool. Then the night before his last day, he says, ‘Can I sing on your record? I don’t want to push it, but – I just want to be able to tell my friends.'”

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