Complex sentence: Retaining founding members Joe Calamito, Tom D'Alessandro and Charles Romano the group then became known as "Joanne and the Heartaches" recording for Catamount Records, an early a cappella record label.
Split into simpler sentences: Retaining founding members Joe Calamito, Tom D'Alessandro and Charles Romano. The group then became known as Joanne and the Heartaches recording for Catamount Records, an early a cappella record label.