American folk singer and guitarist Richie Havens opening the Woodstock Festival at Bethel, New York, 15th August 1969. (Photo by Tucker Ranson/Archive Photos/Getty Images)
20th November 1968: Portrait of American musician Joni Mitchell seated on the floor with her acoustic guitar in her lap. This image was from a shoot for the fashion magazine Vogue. Mitchell wears a white cotton dress. (Photo by Jack Robinson/Hulton Archive/Getty Images)