Kendrick Lamar'sgood kid, m.A.A.d city is slated to be one of the top-selling debut rap albums of the year, and he's continuing to show his appreciation with freebie tracks - but don't consider them, especially brutal, brilliant new song "The Jig is Up," throwaways. "Real people want real music; the jig is up!" Lamar deadpans, right after calling out the rapper Shyne for calling his good kid beats sub-par. He doesn't let up (and neither does that J Cole and Canei Finch beat) until the end - in fact, as time goes on, it's those last few seconds that are the most impressive. Check it out.