Produttur
(2021 Mej 29, 30; Ġun 19, 20)
Conductor
Stage director
(2021 Mej 29; Ġun 20)
(2021 Mej 29, 30; Ġun 19, 20)
(2021 Mej 29, 30; Ġun 19, 20)
Soprano
(2021 Mej 29, 30; Ġun 19, 20)
Bass-baritone
(2021 Mej 29, 30; Ġun 19, 20)
Pianist
(2021 Mej 29, 30; Ġun 19, 20)