San Franciscan metal outfit Deafheaven merits a more nuanced description than “black metal.” While 2013’s Sunbather certainly exhibits the harsh vox and relentless ferocity the genre is known for, it’s more than that. Signed by Sargent House, Deafheaven shares an elusive quality with other 2014 roster-mates like Japanese heavy experimental trio Boris, neofolk starlet Chelsea Wolfe and Emma Ruth Rundle (dark, introspective solo work by The Nocturnes founder/Red Sparowes guitarist). While Deafheaven’s vox rest pretty squarely in black metal territory and the accompanying instrumentation doesn’t exactly call to mind the term “easy listening,” it’s not strictly necro. This may present a problem for heshers who relish hard and fast boundaries. But if you’re curious about how one band, one album even, can encompass bloodcurdling and beatific in the same breath, Deafheaven might be your new favorite band. Find out on Thursday, March 27, at Sister (407 Central NW), starting at 10pm. Admission to this 21-plus gig is $10, and Everhard-core brutalist Bath House opens.