A lot of "Heavy Metal" bands would fit in here nicely. Blind Guardian (namely "Nightfall in Middle Earth", "At The Edge of Time" and other albums), Iced Earth (namely "Framing Armageddon", "Crucible of Man", and "Dystopia") , Gamma Ray, et al. For Prog Rockers I would have to nominate Emerson, Lake & Palmer's "Tarkus" as well as "Karn Evil Nine" from "Brain Salad Surgery".

Crank it up!