via summer-festival.com:

Legendary singer-songwriter GRAHAM NASH is a two-time Rock and Roll Hall of Fame inductee-with Crosby, Stills, and Nash and with the Hollies. He was also inducted into the Songwriter’s Hall of Fame twice, as a solo artist and with CSN, and he is a GRAMMY Award winner.
Nash’s passionate voice continues to be heard in support of peace, and social and environmental justice. The No Nukes/Musicians United for Safe Energy (MUSE) concerts he organized with Jackson Browne and Bonnie Raitt in 1979 remain seminal benefit events. In 2011, Nash was instrumental in bringing MUSE back to the forefront with a concert to benefit Japan disaster relief and groups promoting non-nuclear energy worldwide.