Hair metal wasn’t always all lipstick and leather. Sometimes, it had something to say — something actually progressive.

Besides their killer headliners – Slipknot, Linkin Park, Avenged Sevenfold, Sex Pistols ft. Frank Carter, and Guns N ' Roses ...

From heavygaze hard-hitters Love Is Noise and Blasphemer-sporting black metallers Ruim to Calgary goths Poltergeist and ...