Mumford & Sons' have revealed "Wolf," the newest taste of their new album, "Wilder Mind," out next month. Like "Believe" before it, the song finds the British rockers trading acoustic for electric, adding a drum kit where a single bass drum once stood.

"You were all I ever longed for," frontman Marcus Mumford sings before the band breaks into a fast-paced bridge typified by pulsing bass and quickfire drums. It lacks the usual slow-building sound of many of Mumford's previous songs, opting instead for a fairly focused attack from the start.