Ozzy Osbourne is not the only professional musician featured in the movie. Trick or Treat also stars fellow heavy metal icon ...

Osbourne's heaviest performances are at least partially indebted to Black Sabbath's bassist and lyricist Terry Geezer Butler, ...

Thousands of metal fans gathered at the Allianz Amphitheater to see Hatebreed, GWAR and Lamb of God perform, while mourning ...