The American Primitive-style acoustic guitarist makes albums that fit together beautifully, working together rather than merely occupying the same piece of vinyl.
The classically trained composer was the Beatles' closest collaborator throughout the 1960s, producing virtually all their music. Music critics agree they wouldn't have been the Beatles without him.
Martin, who died yesterday in London, was among the earliest to recognize The Beatles' talents and is often credited with helping them develop their sound. Originally broadcast in 1980.