Man this is going to be hard.
I don't listen to alot of music on my computer, so I'll just say a few artists that I estimate I've listened to the most.
Burzum, Cannibal Corpse, Sonata Arctica, TrollfesT, Mayhem, Rhapsody of Fire, Finntroll, Nekrogoblikon, Korpiklaani, and Opeth.
Alot of black, death, power, and troll/goblin metal.
^_^