In the world of heavy metal, lead singers are as indispensable as riffs and distortion — that is, except for when they get used up and thrown away like yesterday's drumsticks. While frontmen are the face and voice of many bands, they seem particularly prone to quitting, dying or getting fired, leaving groups in the strange position of having to find an entirely new public image. Some bands, like AC/DC, have managed to make the most of replacement lead singers. Others, like Van Halen, haven't. With one of the greatest substitutes of all time, Ronnie James Dio, in town this week with his former Black Sabbath bandmates — who now play under the name Heaven and Hell — here's a look at some of the best surrogate figureheads... More >>>