Heavy-metal satanists, gangsta rappers and childhood-damaged aggro-rockers only wish they could create the destructive racket San Diego screamo machine Locust makes on Plague Soundscapes. The quartet speeds through 23 blasts of incoherence — bearing titles such as “Anything Jesus Does, I Can Do Better” and “The Half-Eaten Sausage Would Like to See You in His Office” — in just about 20 minutes. Atonal keyboards and finger-bleeding riffs uncoil behind vocalist Justin Pearson, who slobbers and howls like the Cookie Monster’s bad-seed brother. To the uninitiated, Plague sounds suspiciously like a splattering mess of noise. Yet dissecting its chaos reveals a coherent amalgamation of influences — crushing hardcore acceleration, bits of metal-god fret-jumping and electro-digital punishment. Forget the Bible’s dire testimony: This Locust infestation is a gift from headbanger heaven.