Billy Joel understood the New Yorkers' dilemma Wednesday night.

Should they watch Joel at Madison Square Garden in his record-breaking monthly residency or watch the Mets clinch their first World Series berth since 2000?

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Luckily, Joel could relate. He gave the crowd score updates throughout the show, which also featured special guests John Mayer, who played on "This Is the Time" and "You May Be Right," and Steve Miller, who played on "The Joker."

And to set the mood, he played bits of "Take Me Out to the Ballgame" and, of course, "Meet the Mets," as well as led the cheers of "Let's Go Mets!"

Joel's relationship with the Mets goes back a ways, even before he performed the final concerts at Shea Stadium in 2008. This season, the Mets adopted "Piano Man" as a sing-along during the middle of the 8th inning, a tradition that seems sure to continue considering this year's results.