ADVANCE FOR USE TUESDAY, JUNE 13, 2017 AND THEREAFTER-FILE - In this March 8, 1968 file photo, members of the rock group Jefferson Airplane pose in San Francisco. From left are, Marty Balin, lead singer, songwriter and founder, Grace Slick, vocalist, Spencer Dryden, drummer, Paul Kantner, electric guitar and vocalist, Jorma Kaukonen, lead guitarist, vocalist and songwriter and Jack Casady, bass guitarist. The Summer of Love in 1967 marked a turning point in rock and roll history: It introduced America to the exciting new sounds coming out of San Francisco's local music scene. There was the Grateful Dead, Jefferson Airplane, Quicksilver Messenger Service, Big Brother and the Holding Company, which launched Janis Joplin's career, and Country Joe and the Fish, a psychedelic rock band. (AP Photo/File)
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