Complex sentence: Cathy Carroll, born December 26,1939, as Carolyn Stern, was an American singer and first recorded for the Triodex label in 1961 where members of the Earls and the 4 Evers sang backup.
Split into simpler sentences: Cathy Carroll, born December 26,1939 as Carolyn Stern, was an American singer. She first recorded for the Triodex label in 1961, where members of the Earls and the 4 Evers sang backup.