Scarlet Fever are Narm’s newest girl trio, and they’re kicking off with a debut show that promises to be anything but tentative. Emily O’Connor, Laura Pryor and Lois Rose combine guitar, fiddle and autoharp with interwoven harmonies, drawing on timeless folk, Celtic melody and old-school country for what they describe as “a haunting, messy and heartfelt evening.” A debut worth being at.