To avoid becoming overwhelmed by this challenge room’s wall of dreadful sound, listen for the unique elements that set each track apart. Black metal is far from one note (unless it’s intentionally one note, like the liminal shrieks on “Hallow / Hollow”). There’s at least one inventive touch on every track here, from the organ on “Sacred Horse” to the piano runs on “In Death’s Embrace.” Then there are bands like Deafheaven, who change the entire emotional valence of black metal by letting a little melodic sunshine in, turning a gale of noise into something life-affirming.