Alice Cooper joined Ke$ha on stage to perform his classic hit 'School's Out' at a gig in Norway last night (July 5).
Ke$ha revealed details about Cooper's impromptu appearance on her Twitter page after the show.
"Thanx for coming to Oslo to do 'Schools Out' with me dad. #alicecooperisaLEGEND. Legend. F*CKING Legend."
Cooper then replied: "Thanks Keshasuxx! Next time our stage, and be sure to bring some band aids (sic)."
The veteran singer's appearance comes just days after he also made a surprised bow alongside the Foo Fighters in Milton Keynes.
Ke$ha - live photos
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