Hard
rock evolved in the late '60s, as psychedelia and blues rock began pushing the
boundaries of amplification and blues-based riffs. Hard rock tends to rely less
on improvisation than blues-rock and it isn't as loud as heavy metal, though
it still has distorted guitars and long solos. Throughout the '70s and '80s,
hard rock stayed essentially the same, though there were slight changes in production
technique. At its core, hard rock is simple, loud, anthemic, and macho, and
it always stayed that way, no matter what decade it was.
Hard
Rock
