August 29, 2011 01:00 PM

It’s time for singer-songwriter Jason Castro to brush up on his lullabies.

The American Idol alum and his wife Mandy welcomed a baby girl, Madeline Emilia Castro, on Sunday, Aug. 28, he confirms to PEOPLE.

Courtesy Jason Castro

In April, Castro shared on his website that he and his wife were expecting a baby, saying, “We just found out yesterday that it is going to be a girl! That makes me laugh … what am I going to do with a sweet little girl?! Probably just smile a lot … I cannot wait!!!”

This is the first child for the couple, who married in Jan. 2010.

Courtesy Jason Castro

— Alla Byrne with reporting by Jessica Herndon

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