If you’re really good or really lucky (coughKanyeWestcough), you can get both at once. Rocky Business’ seven-song EP, “A Rebel’s Roar,” skews toward the art, with a few pit stops in the nonsense. I mention it because the rap/pop duo is really good at club-thumpin’ nonsense when it wants to be. Non-EP single “Kim Kardashian” […]