After making one of the grandest entrances in music history on the stages of East Village clubs, the BBC’s The Old Grey Whistle Test, and Saturday Night Live, theatrical German new wave space alien Klaus Nomi died alone in 1983, a victim of the “first beachhead of the AIDS epidemic.” The disease frightened Nomi’s friends away—no one knew anything about what was then called “gay cancer” but that it was deadly. Soon afterward, the immensely talented singer’s reputation declined. Writer Rupert Smith...