At the Princeton Festival last weekend, American Repertory Ballet dancers Lily Krisko and Aldeir Monteiro performed George Balanchine’s “Tchaikovsky Pas de Deux,” under the tent at on the grounds of Morven Museum & Garden. Puccini’s opera “Tosca” and other musical events were also presented. Performances continue through Saturday, June 21. Visit princetonsymphony.org/festival for tickets.