BURBANK, CA - JUNE 27: Rock and roll musician Elvis Presley performing on the Elvis comeback TV special on June 27, 1968. (Photo by Michael Ochs Archives/Getty Images)
UNSPECIFIED - JANUARY 01: Jim Seals and Dash Crofts of the rock and roll group "Seals And Crofts" pose for a portrait. (Photo by Ian Dickson/Redferns)