Rex Garvin

Rex Garvin (July 24, 1940 – December 2, 2013) was an American rhythm and blues singer, songwriter, keyboard player and arranger. His writing credits include the 1957 US chart hit "Over The Mountain, Across The Sea", by Johnnie and Joe, and his own 1966 recording "Sock It To 'Em J.B.", later recorded by The Specials.