As if we needed any help getting excited for good kid, m.A.A.d. city, Kendrick Lamar whetted our appetites ever further with a leak from the upcoming LP earlier this week. On “Compton,” Lamar busts out some characteristically impressive verses over an old-school-meets-new-school beat by Just Blaze. Also, you can't go wrong with Lamar spitting alongside Dr. Dre.