Billy Joel set to become a father again at 68

'Piano Man' has two children already

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American musician Billy Joel is set to become a father for the third time with his fourth wife Alexis.

The singer and pianist, 68, revealed Alexis, 35, is due to give birth next month.

The couple already have a daughter Della Rose, two, who was born a month after their marriage.

Speaking about the pregnancy and parenthood with the Belfast Telegraph, Joel said: "This one (Della) is pretty good. She sleeps through the night. I hope the next one will."

Joel also has a daughter Alexa Ray Joel, 31, with his second wife, model Christie Brinkley.