Myrna M. Suarez/Getty ImagesBilly Joel‘s concert at New York City’s Madison Square Garden last night included a few unexpected moments. At the latest installment of his ongoing monthly residency at the famous arena, the Piano Man brought out a pair of surprise guests, Steve Miller and John Mayer.

Miller, who on Tuesday was honored with the Rocker of the Year Award at the annual Little Kids Rock benefit gala in New York City, hit the stage to play a rendition of his classic hit “The Joker” with Joel and his band.

Mayer, meanwhile, came out and played guitar on Billy’s “This Is the Time” and “You May Be Right,” as well as on a rendition of Cream‘s famous version of legendary blues singer Robert Johnson‘s “Crossroads.”

Joel — a native New Yorker — also celebrated the Mets’ win over the Chicago Cubs last night by playing a version of the “Meet the Mets” theme song on the piano. The Mets are now headed to the World Series.

As you may recall, Billy was the final performer at the Mets’ former home, Shea Stadium, before it was torn down to make room for the new Citi Field. Mayer was one of Joel’s many special guests for that series of concerts, dubbed “The Last Play at Shea.”

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