Upplýsingar frá listasamtökum (staðfest af Operabase)
Callas and Onassis by Papageorgiou, mið 13 des 2023, Frá (2023/2023), Leikstýrt af Petko Bonev,, Hljómsveitarstjóri Stracimir Pavlov, The National Palace of Culture - Congress Centre Sofia (NDK), Sofia, Bulgaria
