Sir George Henry Martin (3 January 1926 – 8 March 2016) was an English record producer, arranger, composer, conductor, and musician. He was commonly referred to as the "fifth Beatle" due to his extensive involvement in each of the Beatles' original albums. Martin's formal musical expertise and interest in novel recording practices facilitated the group's rudimentary musical education and desire for new musical sounds to record. Most of their orchestral and string arrangements were written by Martin, and he played piano or keyboards on a number of their records. Their collaborations resulted in popular, highly acclaimed records with innovative sounds, such as the 1967 album Sgt. Pepper's Lonely Hearts Club Band.
Martin's career spanned more than sixty years in music, film, television and live performance. Before working with the Beatles and other pop musicians, he produced comedy and novelty records in the 1950s and early 1960s as the head of EMI's Parlophone label, working with Peter Sellers, Spike Milligan and Bernard Cribbins, among others.