jP Hoffman said:
Is Tool considered Hard Rock? Chevelle?
I would call Tool progressive metal, but Chevelle for sure is hard rock, most of which was commonly referred to back in the 2000s as "nu-metal." The 2000s we're definitely the hey day for heavy rock music.
Deftones, Sevendust, Chevelle, Mudvayne, Disturbed, Korn, Papa Roach, System of a Down, Godsmack, Staind, Puddle of Mud, Audioslave, Seether, P.O.D., Drowning Pool, Stone Sour, Breaking Benjamin, Flyleaf, Nonpoint, Linkin Park, Static-X. And even if you want to venture out into the more progressive stuff, there was Tool, Porcupine Tree, Karnivool, Oceansize, Opeth, Meshuggah, etc. There are a hundred more bands I could list.
That is all stuck in my brain because I was in high school from 2002-2006 when all of these bands were at their peak or starting to hit their stride, and everyone at school was listening to this kind of stuff because that's what was on the radio.
Some of these bands are obviously still active and there are still good rock bands out there, but I feel like around the time I graduated from A&M in 2010, the traditional idea of the "rock band" started to go by the wayside with advent of so many ways of making music digitally and inexpensively.