Howie Dorough is a dad again!

The Backstreet Boy and his wife Leigh welcomed their second son, Holden John Dorough, on Saturday, Feb. 16, the singer confirms to PEOPLE exclusively.

My beautiful wife Leigh and I are so proud to welcome our son to the world, Dorough, 39, tells PEOPLE.

Holden surprised us by arriving three days ahead of schedule at 6:37 a.m., [weighing in] at 6 lbs., 15 oz. and 20 inches long.

Holden is healthy and we couldnt be happier, Dorough continues.

Leigh is such an incredible woman and mother, and our son [James Hoke, 3½] is so excited to have a baby brother. I feel so lucky to have such an amazing family.

The couple celebrated their fifth anniversary in December.