Complex sentence: As The Carolina Blackbirds, they appeared on the radio station, WFBC, broadcasting from The Jack Tar Hotel, but for the rest of the 1930s worked for a living, mainly as a mason.
Split into simpler sentences: As the Carolina Blackbirds, they appeared on the radio station, WFBC, broadcasting from the Jack Tar Hotel. For the rest of the 1930s he worked other jobs, mainly as a mason.