01/11/2010 AT 5:45 PM ET
Call them Big & Rich … & Baby.
John Rich, one half of the country duo Big & Rich, and his wife Joan welcomed their first child, a son, his rep confirms to PEOPLE.
Cash Rich made his debut early Sunday morning at a Nashville hospital. John, 36, and Joan, 40, wed in 2008 after quietly dating for more than five years.
The couple announced the pregnancy in October.