Billy Joel is going to be a dad again. A rep for the rocker has confirmed that his girlfriend Alexis Roderick, who turns 34 next month, is pregnant.

“Billy Joel and his girlfriend, Alexis Roderick, are expecting their first child this summer,” said the rep in a statement, “The couple, together since 2009, opted to keep any further details of her pregnancy under wraps until their new addition makes an official debut.”

This will be the second child for the 65-year-old Rock and Roll Hall of Famer (he'll be 66 when the baby is born). His daughter Alexa Ray, with ex-wife Christie Brinkley, is 29.

A source tells the site Radar Online: “They want to call the baby Madison, It’s a girl!”

“There are lots of family photos with Alexis and her growing belly. Those closest to them have seen photos of the sonogram and a pregnant Alexis and with Billy’s mom. “She doesn’t leave the house too often because she doesn¹t want anyone to know. And she wears big dresses to cover it up.”

Meanwhile, Billy continues his historic residency at New York’s Madison Square Garden. He’s set to play his next show on Saturday.

If 'Madison' is lucky, Dad Billy will write a song about her like he did for his daughter Alexa. This song from the album Storm Front was written for her.

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