“‘Does it really matter If you come now Or if you come on later?’” Watch as Joni’s voice melts with the saxophone in her performance of “Cold Blue Steel and Sweet Fire” from London in 1974. | Joni Mitchell

On this day in 1969, Joni opened her headlining set at the Mississippi River Festival with “Chelsea Morning,” in a performance critics praised as a “mysteriously beautiful linkage of voice and sound.” | Joni Mitchell