Writer and director Bill Barclay discusses "The Chevalier," a concert theater work about the life of 18th-century composer and violinist Joseph Bologne, also known as the "Chevalier de Saint-Georges." Friend of Mozart's, music teacher of Marie Antoinette, the finest fencer in Europe, and crusader for the abolition of slavery, Bologne was a remarkable individual. His story deserves to be told. A free community performance takes place February 18 at the Kehrein Center for the Arts in Chicago's Austin neighborhood. To reserve free tickets, visit baroque.org/chevalier-austin.