On her debut solo EP, the former Crystal Castles frontwoman channels all the rage and dread of her previous project into steely electronic anthems as sharp as knives. Pairing apocalyptic trap rhythms with the clearest vocal production she’s ever used, “Without Love” is a fierce and unequivocal declaration of independence, while “Forgiveness” deals in shuddering EBM synths and lyrics about emptiness and abandon. Where those songs captivate and intimidate, “Natural Selection” straight-up terrifies, lobbing volley after volley of blood-curdling shrieks and punishing digital noise.