Def Leppard

It's two huge Def Leppard albums, but which is better - 'Pyromania' or 'Hysteria'?

It was the decade of the guitar hero — but sometimes one wasn't enough.

They hit hard and looked cool doing it.

The '80s brought us a lot of innovation and you can see the rock world shifting through each year of the decade.

These songs have been played over and over, including some that have been performed more than 3,000 times.

Breaking down the most collected albums from Metallica, Judas Priest, Def Leppard and other big metal acts from the 1980s.

Gojira, Alice Cooper, Machine Head, Mammoth, Pantera, Ghost and more all paid tribute to Ozzy Osbourne onstage after the musician's death on Tuesday.

There's way more substance here than haters would lead you to believe.

The genre's best bands had a penchant for reinvention — making this list especially difficult.

Do you know your ABCs of Rock? We hope so as there are well known rock bands for every single letter of the alphabet.