there's been viking metal, medieval metal, folk metal, anybody know any cowboy/western inspired bands?
Cacophony. Check out their album speed metal symphony. Its a masterpiece.
Neoclassical bands combine metal and classical. Early megadeth is pretty jazzy also
Neurosis - Progressive Sludge Metal/Post-Hardcore/Tribal/Ambient Kvelertak - Black 'n' Roll/Hardcore/Punk Coffinworm - Blackened Sludge/Doom Metal Elitist (The one from Portland) - Sludge/Death Metal/Grindcore/Crust Fleshpress - Blackened Stoner/Sludge/Doom Metal Dragged into Sunlight - Blackened Death/Doom Metal Dephosphorus - Death/Black Metal/Grindcore Fukpig - Black Metal/Crust/Grindcore Trap Them - Grindcore/Crust Punk Subrosa - Doom/Sludge/Stoner Metal