UNITED STATES – JANUARY 01: Photo of Leon RUSSELL (Photo by Robert Knight Archive/Redferns)
FEBRUARY 13: Country singer/songwriter Willie Nelson performs onstage on February 13, 1979. (Photo by Michael Ochs Archives/Getty Images)
Inductee Leon Russell performs onstage at the 26th annual Rock and Roll Hall of Fame Induction Ceremony at The Waldorf=Astoria on March 14, 2011 in New York City. (Photo by Michael Loccisano/Getty Images)
The Flatlanders by Paul Mobley
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American folk rock group The Mamas and the Papas, 15th June 1966. From left to right, they are record producer Terry Melcher, band members John Phillips, Cass Elliot and Denny Doherty, and record producer Lou Adler. (Photo by Watson/Express/Hulton Archive/Getty Images)
American country music singer-songwriter Tammy Wynette (1942 – 1998) performing at the Hammersmith Odeon, London, June 1975. (Photo by Michael Putland/Getty Images)