[mark lewisohn official website - www.marklewisohn.net Mark Lewisohn is the acknowledged world authority on the Beatles. His books include Tune In (which is the first volume in his historical trilogy The Beatles: All These Years) as well as the bestselling and influential Recording Sessions, The Complete Beatles Chronicle and (as co-author) The Beatles’ London. He was consultant and researcher for all aspects – TV, DVDs, CDs and book – of The Beatles Anthology. A photographer in the little spare time he allows, his work appears in the photo book An Englishman In Mons.]