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Fans attending Billy Joel's Friday night concert at Madison Square Garden got an extra dose of rock and roll when AC/DC's Brian Johnson showed up to shake things up.

Joel introduced Johnson as a surprise guest and enjoined his band to back the rocker on a rendition of the AC/DC classic "You Shook Me All Night Long." 

At the end of the surprise set, video shows Joel and Johnson sharing an embrace before Johnson leaves the stage.  Back at his piano, Joel then tells the audience, "That's how you do it."