When Brooklyn duo Sleigh Bells arrived six years ago, their wild-style hip-hop/noise-punk seemed like an explosive novelty. Four records into their run, they’re still building on it – from the metal fight song “Unlimited Dark Noise” to the chiming art pop of “Baptism by Fire” to “I Can’t Stand You Anymore,” where singer Alexis Krauss goes full Eighties diva. She sounds at once playful and vengeful: “God only knows the hell that I chose,” she shouts over tornado guitars on “Rule Number One,” like Brian Wilson high on a holy migraine.