Jon Wiederhorn

Their first album with Janick Gers.

On Sept. 27, 1986, Metallica's Cliff Burton was killed in a bus crash.

Their breakthrough album.

On Sept. 20, 1980, Ozzy Osbourne delivered his first solo album, 'Blizzard of Ozz.'

A monster album.

One of metal's most important albums.

On Sept. 11, 2001, Slayer issued their brutal barrage, 'God Hates Us All.'

And with that, System of a Down exploded.

Mötley Crüe were unapologetically obsessed with crafting the kind of sticky, sleazy hard rock that defined MTV hair metal.

On Aug. 25, 1988, Metallica released '...And Justice For All,' their first album without Cliff Burton.

On Aug. 21, 1977, Motorhead began their career ascent with their self-titled album.

On Aug. 18, 1998, Korn catapulted to massive fame with the release of 'Follow the Leader.'