Demi Lovato at Day One of 2017 Billboard Hot 100 Festival on August 19August 20, 2017Performances, Pictures Share your love Demi Lovato performs during Day One of 2017 Billboard Hot 100 Festival at Northwell Health at Jones Beach Theater on August 19, 2017 in Wantagh City. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Share your love Previous Post Demi Lovato Heads To Watch ‘Dear Evan Hansen’ in NYC – August 19th Next Post Demi Lovato at 2017 MTV Video Music Awards on August 27