Tonight's concert on the beach in Atlantic City which was originally scheduled to star Demi Lovato is now a free concert that will feature Cheat Codes, Lauv, and DJ Chris Devine.  This info was posted on acbeachconcerts.com (which is the site where you need to download your free ticket for the show).

According to the site, "The Atlantic City Beach concert taking place July 26th will go on as scheduled as a free show featuring performances by LAUV and Cheat Codes. You can now use your original July 26th paid ticket to gain entry to The Chainsmokers show on the AC Beach this Sunday, July 29th (in the same designated section purchased for July 26th). Refunds will be available at point of purchase if you do not wish to attend The Chainsmokers concert on July 29th."