Jon Wiederhorn

Read the story behind this revolutionary debut.

On July 21, 1971, Black Sabbath released their 'Master of Reality' album.

On July 21, 1987, the world was introduced to Guns N' Roses through their debut disc 'Appetite for Destruction.'

A tour for the ages remembered for all the wrong reasons.

Black Sabbath, with Ronnie James Dio back in the band, released their 'Dehumanizer' album on June 22, 1992.

On April 27, 1979, after various attempts to get Ozzy back on the team, Black Sabbath fired their lead singer.

Take a deeper look into their onstage impact.

The first with Nicko McBrain.

We take a look back at the life and death of metal legend Ronnie James Dio.

Then we wound up with two amazing thrash bands.