One of the darkest entries in a catalog full of them, Wind’s Poem has lo-fi folk pioneer Phil Elverum experimenting with the sounds of Norwegian black metal and finding that it’s a surprising fit for his shape-shifting, atmospheric music. Distorted walls of noise clash against his fragile voice on “Wind’s Dark Poem” and “Mouth of Sky,” while gentler songs like “Ancient Questions” and “Through the Trees” drift along on celestial synthesizers, making for an album as bracingly elemental as it is stunningly human.