TRAVIS PORTER— If you like exhortations on what to do with your hind end delivered over drum machine beats in a lazy Atlanta drawl, then Travis Porter is for you. Formerly known as Hard Hitters, the threesome from Decatur, Ga., has been circulating among the rap scene in the 'A’ for several years, coming up through the strip-club circuit of Buckhead. And if that information alone isn’t enough to give you an idea of what you’re in for at a Travis Porter concert, consider this: YouTube’s No. 1 search result for “Travis Porter” is a track called “Make It Rain,” which begins with the line, “You wanna see some ass, I wanna see some cash.” You’d be hard pressed to find clever rhymes or challenging topics here, but if you’re in the market for tracks ready-made to grind to, TPs got you covered. With Future, Miguel, Ace Hood, Pleasure P., Chief Keef and Mykko Montana. $20-$30. Aug. 11, 7 p.m. Time Warner Cable Uptown Amphitheatre, 1000 N.C. Music Factory Blvd. 704-549-5555.