"Vivaldi's Venice", baroquemusic.org. "As far as his theatrical activities were concerned, the end of 1716 was a high point for Vivaldi. In November, he managed to have the Ospedale della Pietà perform his first great oratorio, Juditha Triumphans devicta Holofernis barbaric. This work was an allegorical description of the victory of the Venetians over the Turks in August 1716."