Headliners are diverse: Guns ‘N Roses, Cardi B, and Robyn. But the main attraction is the crop of rising country stars. Texas’s very own Kacey Musgraves—who swept this year’s Grammys with Golden Hour, a pop-country hybrid album—plays alongside Americana’s sweetheart, Jenny Lewis, and alt-country’s most interesting new voice, Weyes Blood (who, oddly enough, hails from Brooklyn). —C.J.F.