The Festival celebrates its 40th anniversary by commissioning two new pieces. Pianist and multimedia artist Lera Auerbach composed Fractured Dreams, a sonata for violin and piano, for Hilary Hahn, and they premiere the work. The Skaneateles Festival Orchestra, conducted by David Zinman, performs Pierre Jalbert’s Luminous Flux, his homage to Skaneateles Lake. The Aizuri Quartet offers Caroline Shaw’s Blueprint and Brahms’ Piano Quintet in F minor, with pianist Aaron Wunsch. Auerbach plays Mussorgsky’s Pictures at an Exhibition, and a piano festival concert includes the four pianists who served as artistic directors: Robert Weirich, Diane Walsh, Elinor Freer, and Wunsch. Hahn and vocal artists TENET perform an all-Bach concert conducted by Daniel Hege, with Hahn playing violin concertos in E major and A minor. Also appearing are banjo players Béla Fleck and Abigail Washburn and the Jazz at Lincoln Center Orchestra with Wynton Marsalis.