“In promotional photos, the Dreijer siblings appear in comically oversized crow's masks; when performing live, they obscure the stage with a gauzy mesh overhang and peer out impassively from behind bodysuits and balaclavas; on record, they delight in vocal distortions, each one emanating some inhuman grotesquerie. Theatre is the Knife's lifeblood. It's incorporated so completely and convincingly in”