Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Juditha triumphans devicta Holofernis barbarie translated as Judith triumphant over the barbarians of Holofernes, Vivaldi catalogue number RV 644, is an oratorio by Antonio Vivaldi, the only survivor of the four that he is known to have composed. The libretto was written by Iacopo Cassetti, based upon the Biblical Book of Judith. Juditha triumphans was composed and performed in November of 1716 in Venice by the orchestra and choir of the Ospedale della PietÃ and is described as his first great oratorio. The work was commissioned to celebrate the victory of the Republic of Venice over the Turks during the siege of Corfu. In July 1716, the Turks had landed on Corfu and set siege to the island. The population resisted the occupation and in August, Venice signed an alliance with the Holy Roman Emperor.