(MANDATORY CREDIT Ebet Roberts/Getty Images) Glen Campbell performing at Farm Aid in Champaign, Illinois on September 22, 1985. (Photo by Ebet Roberts/Redferns)
ATLANTA, GA – March 2: Country singer Willie Nelson performs with Waylon Jennings at the Omni Coliseum on March 2, 1978 in Atlanta, Georgia. (Photo by Tom Hill/WireImage) *** Local Caption *** Willie Nelson
Glen Campbell performs during a photo call at the Shangri-La Hotel Sydney on January 30, 2008 in Sydney, Australia. (Photo by Gaye Gerard/Getty Images)
