Mark Lewisohn (born 1958) is an English historian and writer acclaimed by fans and media as one of the world's foremost experts on The Beatles. He is the author of "The Complete Beatles Recording Sessions: The Official Story of the Abbey Road years" (ISBN 0-681-03189-1), written after he was commissioned by EMI in 1987 to listen to all of The Beatles' original session tapes. Wikipedia
The definitive Wikipedia entry for Mark Lewisohn. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Mark_Lewisohn
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