Wardruna has such a deep story that a second post was needed. Not only does this Norwegian drone group make their own traditional instruments, but they also sing in galdr which is old norse for spell; incantation and “a master of the craft was said to be able to raise storms, make distant ships sink, swords blunt, armour soft and decide victory or defeat in battles.” (wiki), which is part of Seidr which is basically pagan scorcery. Pretty cool. Gap Var Ginnunga is their debut album, the first release of the trilogy, it meshes perfectly with the second, and both can be left in repeat for days. Incredible, epic, 97%.