Here are a few of the most infamous ones. On July 3, 1969, Brian Jones, the founding member of the Rolling Stones drowned in a swimming pool at age 27. Fourteen months later, Jimi Hendrix died of asphyxiation on September 18, 1970. About 2 weeks after that, Janis Joplin overdosed on heroin in a Hollywood Motel on October 4, 1970.
During that same time, Alan Wilson of Canned Heat died of an overdose and possible suicide on September 3, 1970. His death was overshadowed by the deaths of Hendrix and Joplin.
Nine months after that, Jim Morrison died of heart failure, although an autopsy was never done on the second anniversary of Brian Jones death July 3, 1971.
At the time, the age was not followed. In fact, the commonality was the letter “J”. Jones, Jimi, Joplin and Jim. Then in 1973, Ron “Pigpen” McKernan died of a hemorrhage, a result of alcohol.