Rock legends Bruce Springsteen and Billy Joel have joined forces to commemorate a monumental moment in the latters career.
The Boss wasnt the only special guest Joel brought onstage during the performance.
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Joel first performed at Madison Square Garden on Dec. 14, 1978.

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Andrew Cuomo deemed July 18 Billy Joel Day just before the musicians concert.
Watch several fan-shot videos of the pairs Wednesday night performance in the social media clips above and below.