The birds peck out the eyes of the stepsisters, the sister locks the witch in the oven to save her brother, the mother decapitates her stepson and cooks him in soup — such grim familial imaginings are fit for songs by Katie Gately, who for nearly a decade has been making delightfully twisted sonic fables of her own. Gately’s electronic music is theatrically expressive; her clanging, clamorous soundscapes have always had a flair for the dramatic. On her new album Fawn / Brute, she roots those soundscapes in familiar myth: bedtime stories and nursery rhymes that are mischievous and dark-sided.