Dave Grohl Reveals Justin Timberlake as Mystery Foo Fighters Collaborator

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 Figh