It's the tiny instrument that most closely resembles the human voice in range, timbre and emotion. The harmonica takes center stage in the 179th Roadhouse, and it's an hour of hot blues harp. Watermelon Slim, Mississippi Heat, Big Dave McLean, Junior Wells, and Mannish Boys takes center stage as the backbone of the blues. It's an hour of fine harp playing, and another hour of the finest blues you've never heard.