Def Leppard

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.

The subgenre packed a harder punch than its detractors were willing to admit.

Some bands did not fit the hair metal mold, but played along convincingly enough for at least one album.

Are these bands hair metal or not? History lumps them into the subgenre, but there's some arguments to be made against it!

Guitarist sat out while continuing cancer treatment.

On Jan. 8, 1991, Def Leppard's Steve Clark died from an overdose.

Rock still rolls through the years.

The best of the best, year after year. The rock world has evolved quite a bit from 1970.