You've seen and heard "Old Fangs," the chunky-guitar-and-laser-guided first single from Black Mountain's forthcoming third album Wilderness Heart. "The Hair Song" nails a more laid-back, bluesy Southern (B.C.) rock groove that wouldn't upset the "vibe" at a Black Crowes show. Black Mountain - "The Hair Song" Wilderness Heart is out 9/14 via Jagjaguwar. You can pre-order it now (and enter ...