The Roots are known as one of the best live music acts in the world, and for good reason. It was clear from the first song last night at the 9:30 Club, as the tempo slowly rose from a mellow rhyme accompanied by a simple beat to a full-band barrage of hip-hop stylings, that the tone was set for the rest of the night. Black Thought, Questlove and Co. brought it from that point on, proving to those in attendance that a recipe of great instrumentals and flowing lyrics is certain to equal success.