Amanda Lear first surfaced in the early '70s as a fetishistically clothed album-cover model for Roxy Music. She was said to be a transsexual but, as she told Interview magazine, that was just a ruse dreamed up by her sponsor, David Bowie, to draw attention. Her importance to disco fans, however, began in 1977, when she recorded I Am a Photograph in Germany with production help from Tony Monn…