On Sunday, June 30, HESPERUS, the imaginative Early Music ensemble that has delighted DC audiences since 1979, presents a concert of French baroque music to welcome soprano Amanda Balestrieri back to town, after more than a decade in Colorado. Amanda and Denver harpsichordist Wesley Leffingwell join HESPERUS Director Tina Chancey (viol and pardessus de viole) at 2:30, at St. Mark’s Church-Capitol Hill in the perfect summer afternoon musical treat. The centerpiece is Montéclair’s ravishing cantata “Pan et Syrinx ,“ with instrumental works by Marin Marais and Louis Couperin and airs de cours by Michel Lambert and Etienne Moulinié. Tickets are $20/$10 for students, and are only available at the door. St. Mark’s is located at 301 A St., SE, Washington, D.C. For more information: tinachancey@cs.com or 703-407-0642.