For a couple of years, London band Our Mother have been whittling down their primary elements. Heavy chunks of sound have been chiseled away at, to a point where original components resemble a razor-sharp ice sculpture. “Fire Fire” is, contrary to its title, cold as ice, but it packs a warm heart beneath its gung-ho sense of precision. Unmistakably a pop song, it’s delivered with ultimate awareness—not a second goes by without it having been checked, looked over, and scanned through customs.