Billy Joel Expecting a Baby With Girlfriend Alexis Roderick

— -- Billy Joel is going to be a father again.

The singer is expecting a baby with his girlfriend, Alexis Roderick.

"Billy Joel and his girlfriend, Alexis Roderick, are expecting their first child this summer," his representative said in a statement to ABC News. "The couple ... opted to keep any further details of her pregnancy under wraps until their new addition makes an official debut."

Joel, 65, has a daughter, singer/songwriter Alexa Ray Joel, from his previous marriage to model Christie Brinkley.

According to his rep, he has been dating Roderick since 2009.