In “Blood Harmony,” Barry Mazor tells the story of the brothers who left an indelible mark on the history of popular music.

The gloomy, demon-invoking lead singer of the pioneering band Black Sabbath who became the throaty, growling voice of heavy metal, Ozzy Osbourne has died.

Ozzy Osbourne, the gloomy, demon-invoking lead singer of the pioneering band Black Sabbath who became the throaty, growling voice — and drug-and-alcohol ravaged id — of heavy metal, died Tuesday, just ...

Ozzy Osbourne, the gloomy, demon-invoking lead singer of the pioneering band Black Sabbath who became the throaty, growling ...