<p>There are pop stars, and then there is Prince. In this kaleidoscopic, freewheeling biography, John McKie examines the remarkable life and career of one of the most mysterious figures in music through the prism of the record most widely considered his masterpiece, 1987's <i>Sign o' the Times</i>.<br><br>Drawing on more than 200 interviews with friends, ex-girlfriends, bandmates, recording engineers, bodyguards, personal assistants, wardrobe designers and hairdressers, accomplished music writer John McKie examines the life of this musical polymath with the help of many of the people who knew him best.<br><br>Family members and friends discuss his childhood when he learned to master several instruments, there is new information on how he made the soundtrack to <i>Purple Rain</i>, the full story about why he decided to stop using his name, the now legendary Super Bowl half-time show and <i>that </i>guitar solo at