The most serious mistake is the slip of Leo Riedel who, after completing the editing, lost the Hard Disc resting on the roof of a taxi.
Tinto Brass marriage with Caterina Varzi was not yet celebrated. It happened 8 years later: L'amore in piazza (2017).
In Wien the opera 'Fledermauss' by Strauss is usually staged in Volksoper and not in Staatsoper.
Gluck is presented as a tenor but Rigoletto is a role for a baritone.