Watch Online HD on HDtoday. From the 2018 Chigiana International Festival, the Siena Jazz University Orchestra, the Chigiana Percussion Ensemble, and the Orchestra Toscana dei Conservatori come together in a single ensemble conducted by Tonino Battista and Roberto Spadoni, featuring exceptional soloists in a tribute to L. Bernstein and G. Gershwin on the 100th and 120th anniversaries of their births.