 Bathory were particularly important in inspiring the further subgenres of Viking metal and folk metal.Power metal emerged in Europe in the late 1980s as a reaction to the harshness of death and black metal and was established by Germany's Helloween, who combined a melodic approach with thrash's speed and energy.England's DragonForce and Florida's Iced Earth have a sound indebted to NWOBHM, while acts such as Florida's Kamelot, Finland's Nightwish, Italy's Rhapsody of Fire, and Russia's Catharsis feature a keyboard-based "symphonic" sound, sometimes employing orchestras and opera singers.