The names in Fragile Wings suggest softness; tenuous and brittle.

And there is desperation in “Hopeless Magic,” “Three-Headed Moth” and, of course, the album title. But the album is anything but fragile. A deft mixture of progressive, death, and post-metal, Australia’s Cave Sermon delivers a rousing manifesto, in the same echelon as Deafheaven or Baroness, able to match impenetrable sludge with roaring beauty. We talked to Charlie Park on the Woodhouse.