L/A Arts announces a free summer concert featuring Sylvain’s Acadian Aces from 5:30 to 7:30 p.m. Friday, July 27, in DuFresne Plaza, 72 Lisbon St., Lewsiton. Vocalist and guitarist Robert Sylvain and charismatic fiddler Hawk Kallweit supply a one-two punch that’s instantly compelling and distinctive. With Maine’s own true accordion ace Junior Stevens on button-box, and the unstoppable combination of Tom Jacques on upright bass and Kris Day on drums, Sylvain’s Acadian Aces deliver heart-wrenching love songs and electrifying dance numbers. Rooted in classic Cajun two-steps and waltzes, the repertoire also folds in elements of Creole and zydeco traditions along with original Americana and rock and roll. This concert will take place during Art Walk LA. Patrons are encouraged to bring their own chairs.