Ozzy Osbourne, the storied Black Sabbath lead singer known as much for his excesses and bizarre onstage antics as his pioneering heavy metal music, has died in London. Bedeviled by health issues for years, Osbourne died Tuesday morning, his family announced, according to the Associated Press. He was 76.

The co-founders of Black Sabbath paid tribute to their doomsayer-in-chief following the news of Ozzy Osbourne’s death at age 76 on Tuesday.