The Mallett Brothers will perform Aug. 11 at Marine Park in Rockport as part of the Happenings on the Harbor series. 

Food trucks will begin serving at 4 p.m., and the concert will start at 5 p.m. Take along a picnic blanket and friends.

Food trucks include the Ugly Dumpling, Crepe Elizabeth, Flatbread Pizza, with signature cocktail, beer and wine, and Stone Fox Creamery.