Zac Hanson and wife Kate welcomed John Ira Shepherd Hanson into the world onÂ Tuesday. The boy was born in Tulsa.
Zac said the tyke will go by Shepherd and weighed in at 8 lbs, 4 oz.
"I am so overjoyed," the proud papa told People. "There is not an audience or concert that could ever stand up to the feeling of meeting your baby for the first time."