Foo Fighters teamed up with Michael Bublé last night (August 12) to perform his 2009 hit single ‘Haven’t Met You Yet’.It comes after Dave Grohl and co had recently been calling up fans to sing the track during drummer John Freese’s medley section on tour which showcases all the previous bands and artists he’s played with including Bublé.During the band’s set at Outside Lands festival in San Francisco, Grohl called up a “super fan” who was holding an “I love Bublé” sign.“This motherfucker better know the song,” Grohl joked before Bublé got up onstage and sang the single with the band.