I have a feeling the OP meant German and AUSTRIAN audiences.
Btw, Trevor Nunn is directing, so it has quite the international leading team, with him and Steven attached. And I've seen a number of the songs performed now. Wilemijn Verkaik did one of the songs at her 54 Below show last year, and 2 were presented at the Wall to Wall Stephen Schwartz at Symphony Space in the spring - all in English because obviously Steven wrote the lyrics in English anyway, and they were later translated.
I am German and understand the song, the one posted is the Act 1 love song, so no, not the 11 o'clock number. It's about the librettist of The Magic Flute (who was also director, producer, theater owner ect.), Emanuel Schikaneder, and the tumultuous relationship with his wife, Eleonore. It's said that their relationship, and the things that happened in their lives, are how The Magic Flute came to be in the first place.
I'll hopefully get to see it, I'm quite excited!