Veteran rocker performs 'School's Out' in Norway with 'Tik Tok' singer
The veteran rocker made an impromptu appearance, joining the ‘Tik Tok’ singer onstage for a rendition of his classic track ‘School’s Out’.
The veteran rocker also surprised Foo Fighters fans in Milton Keynes over the weekend when he joined Dave Grohl and co onstage to perform a medley of songs.
Last month he also shocked his own fans during a gig in London when he invited Hollywood actor Johnny Depp to join him on guitar.
Ke$ha also briefly joined Cooper at his Nashville, Tennessee gig last October.