Rocker David Crosby is out promoting "Long Time Gone," a hefty 489-page memoir (co-written with Carl Gottlieb) that traces his life from boyhood to stardom (with the Byrds and Crosby, Stills, Nash & Young) to his prison term on cocaine-and-gun charges. The confessional book graphically describes Crosby's descent into a heroin habit. What went wrong - needles and pills, hit-and-miss records and shaky personal relationships - is the unifying thread in many pop memoirs. Yet Crosby feels that his story has more to say than mere pop-music dirt. "I became one of the most awful examples of drug addiction that anybody knows about, and certainly one of the most public. I did it to such an extreme that I came very close to dying. It was a sort of an archetypal mess, and people are fascinated with that kind of story. They love it when somebody can beat the odds, and they love an underdog. And God knows I was one."