Mark Lewisohn is a renowned British author, researcher, and historian, celebrated for his comprehensive works on The Beatles. Widely regarded as the world's leading authority on the iconic band, Lewisohn has dedicated much of his career to chronicling their history with meticulous accuracy and depth. His acclaimed book, "Tune In," is the first volume in an exhaustive trilogy, "The Beatles: All These Years," which delves into their cultural and musical legacy. Beyond his Beatles scholarship, Lewisohn has contributed to various media as a journalist and consultant. His dedication to preserving musical history continues to inspire enthusiasts globally.