Ahem!
Answer? They all have first-hand information about or have personally experienced die zauberflote, which was born, musically speaking, on the stage at Orchestra Hall, and also, not incidentally, recorded there. As virtually every music professional in the world claims to ‘love’ Mozart, I am sure it can’t be long before they are jumping up and down with excitement and unable to remain silent…:-0
Le Chant du Rossignol...(song of the nightingale) 