Watch VoirFilms. Austrian composer Franz Léhar's opera Giuditta receives a unique interpretation by the Seefestspiele Mörbisch in this stage production, which stars Natalia Ushakova and Mehrzad Montazeri as the principal leads. The Morbisch Festival Orchestra accompanies the production, while the Chorus and Ballet of the Seefestpiele Mörbisch lend added support.