Watch Bruce Springsteen Show Up And Sing At Billy Joel’s 100th Madison Square Garden Show

“I’d like to bring out an old friend,” Billy Joel told the crowd. “We go back a long ways – we were both on the same record label, we both got dumped by the label. But we did it.”

Then The Boss showed up on the The Piano Man’s stage, and sung Tenth Avenue Freeze-Out and Born to Run.