Folk rock group The Byrds (L-R) Chris Hillman, Jim (Roger) McGuinn, Gene Clark, David Crosby and Michael Clarke pose for a portrait circa 1965. (Photo by Michel Ochs Archives/Getty Images)
UNITED KINGDOM – JANUARY 01: CAVERN CLUB Photo of CAVERN CLUB and George HARRISON and BEATLES, George Harrison performing live onstage, playing Gretsch 6128 Duo Jet guitar (Photo by Mark and Colleen Hayward/Redferns)
Pop group The Beatles from left to right, Paul McCartney, John Lennon, Ringo Starr and George Harrison, circa 1964. (Photo by Archive Photos/Getty Images)
