Mumford and Sons just released the next installment from their soon-to-come album, Wilder Mind. The song is called "The Wolf," and it's a departure from their earlier music. Gone are the days of hipster alternative blends of folk instruments and crooning, soulful harmonies. "The Wolf" retains some of the familiar harmonizing, but everything is more intense. While his voice stays recognizable, the music surrounding Marcus Mumford's vocals is much grittier and much more rockin' & rollin'.