Billy Joel brought out another famous guest for Sunday’s sold-out concert at Madison Square Garden – Def Leppard frontman Joe Elliot.

Elliot joined the band for a cover of “Pour Some Sugar On Me”, while Joel accompanied on piano and backing vocals.

Joel has been filling his shows with famous guest stars lately. Last month he had Peter Frampton join him onstage at MSG while drummer Jason Bonham sat in at a show in Philadelphia.

Ever been to a concert with a surprise guest star? Who was it?

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