The eleventh annual Forecastle festival has announced its initial lineup. The three-day fest will include The Black Keys, The String Cheese Incident, The Avett Brothers, The Flaming Lips, Alabama Shakes, Animal Collective, Old Crow Medicine Show, Grace Potter & the Nocturnals, Big Boi, Matt & Kim, Purity Ring, and more than fifty other acts. It will take place July 12-14th at Louisville's Waterfront Park. For tickets and more info, head to the fest's website.