Out of the blue on Friday, Kendrick Lamar released a new track off his upcoming album, good kid, m.A.A.d city, which drops Oct. 2. It's the superbly (and appropriately) woozy "Swimming Pools (Drank)," that boasts a heavy beat from hit-maker T-Minus. It sounds like the hangover complement to the summery indulgence of "The Recipe."