One of the biggest country stars will be headlining the Bangor Waterfront Sunday night.Jason Aldean is in Bangor to preform his show with Luke Bryan downtown. It’s part of the concert venues 3 straight shows for the holiday weekend. Big time rush preformed Friday and another country artist, Keith Urban took the stage last night, but today’s show is expected to be the biggest single ticketed concert in Maine.Organizers say they’ve rearranged the structure of the waterfront so they can fit as many people as possible.President of Waterfront Concerts, Alex Gray, said “It’s just an enormous crowd. We’ve closed down half of Main Street, created a whole new pedestrian aisle out there, push all out vending and merchandising things of that nature out into Main Street”Gray thanks the people in the New England Region for events like this. He says the more people who come out, the bigger the events will be.