Informazzjoni minn organizzazzjoni tal-arti (Verifikat minn Operabase)
NOSPR / Poranek noworoczny by Nielsen, Heuberger, Strauss II, Lumbye, H. C., Ziehrer, Carl Michael, Lehár, Minn (2024/2024), Surmast Direttur Henrik Schaefer, NOSPR, Katowice, Poland