Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
«Opera Engiadina» Chorkonzert by Verdi, Nicolai, Wagner, Richard, Offenbach, Derungs, G. A., Gershwin, Rossini, Sib 17 Set 2022, Minn (2022/2022), Surmast Direttur Claudio Danuser