PONTIAC, MI – AUGUST 8: American, singer, songwriter and actress, Madonna, on stage during the "Who's That Girl" tour, on August 8, 1987, at the Pontiac Silverdome in Pontiac, Michigan. (Photo by Ross Marino/Icon and Image/Getty Images)
Paul Simon of American folk rock duo Simon & Garfunkel performs the song 'I Am a Rock' on the set of the Associated Rediffusion Television pop music television show Ready Steady Go! at Wembley Television Studios in London on 8th July 1966. (Photo by Ivan Keeman/Redferns)
Singers Bing Crosby (L) and David Bowie performing a medley of the songs 'Little Drummer Boy' and 'Peace On Earth' on the set of the television special Bing Crosby's Merrie Olde Christmas, circa 1977. (Photo by TV Times via Getty Images)
