Pink stunned music fans at Los Angeles nightspot the Key Club on Monday night when she took to the stage to belt out a cover of Tom Petty's 'Free Fallin' with the house tribute band.

Representatives for pop star Pink and 'Entourage' actor Jeremy Piven have denied the pair are dating.

Pink is moving on fast after her split from husband Carey Hart - she has reportedly moved in with new beau Todd Morse.