Gregory Carroll (R&B singer)

John Wayne Carroll (December 19, 1929 – January 25, 2013), usually known as Gregory Carroll or Greg Carroll, was an American R&B singer, songwriter, and record producer. He was a member of several successful vocal harmony or "doo-wop" groups including The Four Buddies and The Orioles, and co-wrote and produced Doris Troy's 1963 hit "Just One Look".