Watch FMovies. Antonio Vivaldi’s baroque music masterpiece Juditha triumphans is presented by the Greek National Opera for the first time, as part of the celebration of the 200th anniversary of the Greek Revolution. The work is about the victory of the Venetians at the siege of Corfu, which acted as a catalyst in stopping the Ottoman advance into the Christian West. Juditha triumphans is the only extant oratorio of the four Vivaldi is known to have composed. The intense war atmosphere is portrayed through the dynamic choral parts, while Juditha’s faith and honesty through the lyric and tender writing. Remarkable is the use of many different and relatively rare instruments, such as the viola d’amore, the chalumeaux (early clarinets) and theorboes, with which Vivaldi brings out the work’s highlights.