Clockwise from top left: Ethel Cain, Balmorhea, Shaun Ross, The Parrots, Tom McGuire & The Brassholes, and Sorry. Let RIFF pick your playlist! This week’s highlights include a gleefully creepy Midwestern gothic tune by Ethel Cain, Balmorhea’s beautifully hypnotic sound and Sorry’s two-minute smoke break. *** Sorry, “Cigarette Packet” — At only…