On Dark HorsesThe cover to Emma Ruth Rundle's fourth solo record, On Dark Horses, bears a blurry photo of the songwriter obscuring her face with a large toy horse with broken legs. The photo suggests something candid but also hidden, graceful but also fractured,a fitting portrait for an artist who has established a career by vacillating between shrouding herself in mystery and exposing her wounds to the world. The first peek behind the curtain came with her Sargent