Jon Wiederhorn

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

A monster album.

On Aug. 12, 1991, Metallica released their biggest selling disc, known as 'The Black Album' to fans.

Here's how one of the most successful rock albums ever came together.

One of the biggest albums ever made.

So much for retirement. Ozzy Osbourne made his 'comeback' in 1995 with the 'Ozzmosis' album.

On Aug. 7, 1986, a judge ruled on a lawsuit against Ozzy Osbourne and his record labels tying the song 'Suicide Solution' to the death of a teen.

The first album after Ronnie James Dio was kicked out of Black Sabbath.

A major step forward on their first album with Ronnie James Dio.

Then we wound up with two amazing thrash bands.