Philadelphia is pulling out all the stops for America's 250th birthday and celebrating with a free concert and fireworks on the Benjamin Franklin Parkway on July 4. Headliners for the One Philly: Unity Concert for America include Christina Aguilera, Jill Scott and The Roots, who are set to bring Will Smith and DJ Jazzy Jeff, Meek Mill and other artists on stage. Wanda Sykes is hosting the show, which will include appearances by Gillie Da King, Wallo267 and more.