Peter Asher CBE (born 22 June 1944) is a British guitarist, singer, manager and record producer. He first came to prominence in the 1960s as a member of the pop music vocal duo Peter and Gordon, before going on to a successful career as a manager and record producer. Using only the above description and what you know about the world, "Peter Asher made his musical debut in the 1950's. " is definitely correct, incorrect, or inconclusive? 