Here are the facts as I know them:
Sometime in the late 60s, Beach Boy Brian Wilson was working on his magnum opus, Smile. However, he managed to kill himself through the kind of combination of stupidity and bad luck typical of rock musicians, and the album was put away for a while. In the mid 80s, however, some of his friends and family got together and finished it, leading to a Doonesbury story arc in which one of the first AIDS victims manages to live just long enough to hear it. There was also a sci-fi book whose title I cannot recall, about a man who can go back in time and uses this ability to meet and try to save rock stars, including Jim Morrison, Jimi Hendrix, and Brian Wilson.
Now...how do I square this with the fact that Brian Wilson isn't dead, and that Smile was released in September of 2004? Well, I don't really. I put it in the same category with a number of other small weirdnesses, such as the guy I know who remembers watching Canadian TV out of Ottawa when he was a child, including shots from that city of Detroit across the lake. Problem is, Ottawa is nowhere near Detroit, or for that matter any of the Great Lakes... Or that Yitzak Rabin was assassinated when I was in high school--that is, before 1994. Or the 1964 "Re-elect Keenedy" pin I found one day when I was at my grandparents' house. It has, of course, long since disappeared.