Fans of Sabbath, Rainbow, and Dio will all be mourning today.

Ronnie James Dio, legendary frontman of Dio, Black Sabbath, and Rainbow, passed away peacefully, according to his wife, today at 7:45 a.m. He was 67. The legendary metal vocalist, born Ronald James Padavona, was diagnosed with stomach cancer in November, forcing him to cancel shows with Heaven & Hell—the name of the Sabbath lineup he’d been fronting since 2006.

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