TIGHTROPEFRIDAY, JULY 17TH Presented by Diamond Jo Casino, ImOn Communications and U.S. Bank. 10 OF SOULFRIDAY, AUGUST 14TH Presented by McGrath Family of Dealerships and DB&T. What to know if you're coming to Music on Main No carry ins or coolers are allowed inside the festival grounds. Please patronize our beverage stands and our great food vendors! Music on Main is sponsored by Dubuque Main Street and we will be serving up ice-cold beverages all night long!