As one half of the Indigo Girls for over thirty years, Amy Ray’s feistiness and grit always served as a contrast and balance to Emily Saliers’ tenderness and sheen and this is doubtless what has made the duo such an enduring success.  Ray has, by now, rightly earned her place as a member of folk rock royalty and on Holler, her sixth (who knew?!) solo record, her creative fires are burning as bright as ever.