10 April 1970: Paul McCartney announces The Beatles' split
RIP, the man who made the Beatles great
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Sir George Martin profile
Beatles' producer George Martin dies at 90 – Orange County Register
Sir George Martin, the 'fifth Beatle' dies, aged 90 - BBC News
Beatles Producer George Martin Dead at 90
Giles Martin on the Beatles' 'Let It Be' -- and Deluxe Editions
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How George Martin Met The Beatles In 1962 And Changed Music Forever
Why did George Martin almost not sign The Beatles?