San Francisco singer and songwriter Brigitte DeMeyer’s brand of Americana is gritty and direct, even as her sweetly soulful voice keeps Red River Flower as lovely as it is cutting. Much of the aforementioned grit comes from Buddy Miller, whose stinging stabs of electric guitar offer apt punctuation for the more intense emotions explored. Some of Flower’s most arresting songs are those that touch on spirituality, like the opening “Looking for Moses” and the pleading “Shepherd,” but Brigitte is just as convincing when tearing into the lover’s lament “Wicked to Win” or the abstract New Orleans strut of “Justice.”