Mark Lewisohn

Mark Lewisohn is an English historian and biographer born on 16 June 1958, widely recognized as the world's leading authority on the Beatles. Since the 1980s, he has authored numerous reference books on the band, including The Complete Beatles Recording Sessions (1988) and the ongoing three-volume series The Beatles: All These Years, starting with Tune In (2013). He has worked for EMI, MPL Communications, and Apple Corps.