Jim Morrison, 27 Years Old
The Doors frontman Jim Morrison was an absolute icon in the 60s. He co-wrote hits like "Light My Fire," "Break on Through," "Moonlight Drive," and "Hello, I Love You." He was described as the embodiment of the hippie counter-culture. He struggled with alcohol dependency, which affected his performances. He died suddenly, and there was no autopsy performed, so his cause of death is still unknown, though it was most likely an overdose.