-- Sir George Martin, the producer who some called "the Fifth Beatle" for his contributions to the Fab Four's sound, has died at age 90.
Martin's management group confirmed his death in a statement to ABC News early today. "We can confirm that Sir George Martin passed away peacefully at home yesterday evening, Tuesday March 8. The family would like to thank everyone for their thoughts, prayers and messages of support," the statement read.
Before the statement was released, Beatles drummer Ringo Starr referred to Martin's passing on Twitter.
Former Beatle Sir Paul McCartney also paid tribute to Martin:
Martin famously suggested the group speed up their song "Please Please Me," which started out as a much slower ballad. It became their first U.K. No. 1 hit.
In addition to producing their records, Martin contributed musically to the Beatles' catalog, playing additional instruments and arranging their increasingly complex songs. For example, he composed the harpsichord section for "In My Life," wrote and conducted the string section for "Eleanor Rigby," and arranged the score for the band's movie, "Yellow Submarine." It was his idea to add a string quartet on "Yesterday"; he also played piano on "Lovely Rita," and helped create some of the groundbreaking soundscapes on songs like "I Am the Walrus" and "Being for the Benefit of Mr. Kite."
Martin was knighted in 1996, and inducted into the Rock and Roll Hall of Fame in 1999. Together with his son Giles Martin, he remixed the Beatles catalog for Love, the Cirque du Soleil Las Vegas production.