�The true father of metal�; �the king of the heavy riff�. Tony Iommi�s band is topping the charts again after 43 years. Black Sabbath are better known for the antics of on/off lead singer Ozzy Osborne than the skills of its guitarist. But Iommi is the one original member of the band to have stayed the course. This despite missing finger tips that can make playing painful, the rock and roll lifestyle lived to the full, and now cancer. Still recording and touring around his treatment, what keeps him playing?