Howard Bloom—called "the greatest press agent that rock and roll has ever known" by Derek Sutton, the former manager of Styx, Ten Years After, and Jethro Tull—is a science nerd who knew nothing about popular music. But he founded the biggest PR firm in the music industry and helped build or sustain the careers of our biggest rock-and-roll legends, including Michael Jackson, Prince, Bob Marley, Bette Midler, Billy Joel, Billy Idol, Paul Simon, Peter Gabriel, David Byrne, AC/DC