There is no greater enigma in the music industry today than Rick Rubin. But he has made one thing clear: the records he produces are sonically and stylistically beyond reproach. MTV has called Rubin 'the most important producer of the last 20 years', while Rolling Stone ventured even further, deeming Rubin 'the most successful of any genre'. Rubin has earned seven Grammys and he is the most in-demand record producer working today. Rick Rubin reveals how he worked with some of the greatest names ...