The Beatles rehearse at the ABC Theatre, Blackpool for the group's bill-topping appearance on ABC TV's Blackpool Night Out, 1 August 1965. Left to right: George Harrison, Paul McCartney, John Lennon, and Ringo Starr. (Photo by Daily Mirror/Daily Mirror/Mirrorpix via Getty Images)
American singer Roy Orbison at the Microphone at ATV House in London where he has signed a TV contract worth £10,000 for 2 shows on ITV. October 1964. (Photo by Greenwell/Daily Mirror/Mirrorpix via Getty Images)
LOS ANGELES – 1968: Married country singers Johnny Cash and June Carter Cash perform onstage in 1968 in Los Angeles, California. (Photo by Michael Ochs Archives/Getty Images)
The Beatles answer questions for newsmen and journalists in New York after their arrival for their first tour of America. Left to right: Paul McCartney, Ringo Starr, George Harrison and John Lennon. 7th February 1964. (Photo by Daily Mirror/Daily Mirror/Mirrorpix via Getty Images)
The Doors L-R Jim Morrison, John Densmore, Ray Manzarek and Robby Krieger pose for a portrait circa 1968 in Hollywood, California. (Photo by Edmund Teske/Michael Ochs Archives/Getty Images)
