Those are three of the names that have been announced for this year's XPoNential Music Festival from WXPN Philadelphia. That's right, it's Dr. Dog, again, just like last year. Same with The Lumineers, who played last year as well. The same deal as last year, the 3-day festival is at Wiggins Park, Camden, NJ, on July 26-28. Saturday night, the action shifts next door to Susquehanna Bank Center for Ho Heying of The Lumineers, Dr. Dog and Poliça. The rest of the line-up will be revealed on April 16.