Louis Langrée and the Mostly Mozart Festival Orchestra are joined by violinist Christian Tetzlaff and violist Antoine Tamestit for Mozart's Sinfonia Concertante in E flat major for Violin and Viola; and soprano Susanna Phillips for Mozart's "Crudele?...Non mi dir, bell'idol mio" from "Don Giovanni" and "Bella mia fiamma...Resta, o cara."