Kendrick Lamar brought a little 'Poetic Justice' to the 'Late Show With David Letterman' last night when he treated the late-night audience to a performance of the track from Lamar's debut studio album, 'good kid, m.A.A.d. city.'

The Source magazine 'Rookie of the Year' created a jazzy soul vibe with the help of a live band that included sax man Terrace Martin. As the sampled voice of Janet Jackson played in the background, Lamar rhymed, "I'm talking poetic justice, poetic justice / If I told you that a flower bloomed in a dark room, would you trust it? / I mean you need to hear this / Love is not just a verb, it's you looking in the mirror."

Even without Drake, who appears on the studio recording of the track, Lamar nailed the performance, just as he did last month on 'Saturday Night Live.' Lamar is touring this summer and will play the Bonnaroo music festival.