Simply calling Opeth a metal band and leaving it at that would be akin to defining Bob Dylan as a guitar player. Sure, metal is an undeniably important part of what this Swedish band has been doing since its inception in the ‘90s, but as you're about to find out, they're just as much a prog rock band, or a folk group, or…. Let's just say all the aforementioned sounds come together in the epic journeys Opeth concocts.