As the Prince of Darkness prepares for his final concert with Black Sabbath, admirers including Lars Ulrich, Lita Ford and Billy Corgan extol his virtues.

As the Prince of Darkness prepares for his final concert with Black Sabbath, admirers including Lars Ulrich, Lita Ford and Billy Corgan extol his virtues.
The festival has more than 20 music events this year — its highest number yet — including documentaries, music videos and podcasts.
The metal institution is on the road supporting its 11th album. Drawing on four decades of songs, the drummer Lars Ulrich keeps fans, and his bandmates, on their toes.