Gov't Mule's sound is a throwback to the '70s heyday of Southern rock, and their style is peppered with references to the best of the Allmans, with a liberal dose of early ZZ Top thrown in for good measure. Their second album shows no signs of a sophomore slump, featuring playing and songwriting every bit as strong as their debut outing. Warren Haynes' guitar work, if anything, is even more adventurous this time around, particularly effective on the opener "Blind Man in the Dark," "Thelonius Beck," and "Birth of the Mule."