Known as country music's First Family, the Carter family first gained national acclaim on XERA radio, the powerful station owned by Dr. John R. Brinkley across the Rio Grande from Del Rio that reached listeners around the country. A.P. Carter, his wife Sara, and his sister-in-law Maybelle first broadcast there during the 1938-39 season, and for the next few years they and others performed gospel and folk standards, early elements of country music. Often opening their Good Neighbor Get-Together show with Keep on the Sunny Side, the group at times included other family members and continued to influence American music for many decades.