Of all the rockers who died at age 27, perhaps none left the world with such a gaping sense of "what could have been" than Jimi Hendrix, who died of asphyxiation in his girlfriend's London apartment on Sept. 18, 1970.

His unparalleled ability to express and innovate on the guitar, as well as his endless desire to redefine everything about what rock music could be and how it was presented, make it all but certain that the four original albums we got to hear from Hendrix were only the tip of what he could have accomplished with more time. Sadly, a combination of red wine and sleeping pills (reportedly, stronger than expected) took that all away from us.