Jon Wiederhorn

On Jan. 17, 2001, bassist Jason Newsted revealed the news that he was exiting Metallica.

And with that, System of a Down exploded.

The Black Sabbath legend recruited a number of guest singers on this solo record.

On Sept. 24, 1990, Megadeth issued their 'Rust in Peace' album.

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

Welcome back, Bruce and Adrian.

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

Take a look back at the landmark disc here.

This one paved the way for thrash.

On Dec. 3, 2015, the iconic Stone Temple Pilots singer died while on tour.