This 28-year-old British singer/songwriter’s pinched, haunting vocals recall both the left-field folk of Josephine Foster and Connie Converse as well as Jimmy Scott’s eerie cabaret blues. Green’s tunes seem at once homespun and sophisticated, often bleak in viewpoint but revealing an innate dignity and indomitable spirit. Accompanying herself on acoustic guitar, she infuses “Bad Medicine,” “Hey Joe,” “Displacement Song,” and similarly sinister narratives with a gothic spookiness worthy of Kurt Weill. “Midnight Blues” and “Rag & Bone” carry themselves with a bruised jauntiness, suggesting illicit thrills mixed with shadowy dangers. Softer yet no less intense are “French Singer” and “The Quiet,” both infused with exquisite vulnerability and pathos. A vintage brass section underscores the jazzy elements within Green’s music. All told, O, Devotion! is a compelling if sometimes disquieting ride into a dream world located somewhere between ‘30s Berlin and Chicago. It’s as familiar as an old folk ballad and as strange as a private hallucination.