Cosmo Baker and DJ Diamond Kuts are among the Philly-based artists scheduled to perform at a free music festival in East Passyunk on Sunday, September 10 from 11 a.m. to 6 p.m. The festival runs along East Passyunk Avenue between Broad and Dickinson streets. There will be street food, a vintage vendor market and family-friendly activities including appearances from Philly's Bubble Queen and the Philly Goat Project.