Joan Baez and Bob Dylan performing at the Newport Folk Festival at Freebody Park on Rhode Island, USA, 23rd-26th July 1964. (Photo by Gai Terrell/Redferns/Getty Images)
(L-R) Dave Pritchard, Jeff Lynne,Roger Spencer, and Greg Masters of the rock band "The Idle Race" poses for a portrait in circa 1968. (Photo by Michael Ochs Archives/Getty Images)
LOS ANGELES – CIRCA 1967: The Stone Poneys (L-R) Bobby Kimmel, Linda Ronstadt and Kenny Edwards pose for a portrait circa 1967 in Los Angeles, California. (Photo by Michael Ochs Archives/Getty Images)
MICHAEL D'ADDARIO of The Lemon Twigs performs during the Outside Lands Music Festival in San Francisco, California (Photo by Daniel DeSlover/ZUMA Press Wire/Shutterstock)
