The Virgin Mobile Free Fest has just announced their date, September 10th, and line-up which includes: The Black Keys, Cee Lo Green, TV on the Radio, Patti Smith, Deadmau5, Cut Copy, Grace Potter & the Nocturnals, Okkervil River, Big Sean, Empire of the Sun, Two Door Cinema Club, Alberta Cross, Bombay Bicycle Club and in the “Dance Forest,” sets from Calvin Harris, Ghostland Observatory, !!!, Porter Robinson, Eclectic Method, Teddybears and James Murphy.

Tickets to the festival will be given away free on July 15th at 10am, that is THIS Friday. Free Fest will once more be taking place in Maryland at the Merriweather Post Pavilion. We covered the festival in 2008 and will be back once more in the sweltering Maryland heat this year!