EVANSTON—Almost a dozen Northwestern country music fans were in disarray this past Tuesday when they learned of Mayfest’s final performer, rapper Rhymefest. Cramped into a booth at a nearby diner, the handful of fans nursed their disappointment with cheap whiskey: for the 38th time, their favorite performers were snubbed. Said Cletus Owens, a Junior transfer from Arkansas Agriculture and Whining, “I thought for sure we could pull off Rascal Flatts, maybe even Hank Williams Jr.. But Rhymefest? He ain’t country.”