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Johnson and Joel shake New York
In a rare mix of rock legends, AC/DC lead singer Brian Johnson made a surprise appearance at a Billy Joel concert in New York.
They played the heavy rock band's classic You Shook Me All Night Long at the gig at Madison Square Garden on Friday night.
Billy introduced Brian about halfway through the show, saying he was part of one of the best bands he had ever seen live.
The packed arena erupted when Billy and his band began playing the rock anthem with English singer Brian on lead vocals.
The show was part of a series of concerts by Billy at the Garden. He is playing there monthly as an artist-in-residence.
The show included a mix of Joel standards such as Uptown Girl and Big Shot as well as less-played songs, such as The Ballad Of Billy The Kid.