(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)
MAY 26: (EDITORS NOTE: Image has been digitally converted to black and white.) Musician Brain Wilson performs Pet Sounds at the Pantages Theatre on May 26, 2017 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
