Emanuel Schikaneder heard this, he called down into the orchestra, "Hey, Mozart! That's no good, the music must express greater astonishment. They must both stare dumbly at each other, then Papageno must begin to stammer: 'Pa-papapa-pa-pa'; Papagena must repeat that until both of them finally get the whole name out. Mozart followed the advice, and in this form the duet always had to be repeated." Castelli adds that the March of the Priests which opens the second act was also a suggestion of Schikaneder's, added to the opera at the last minute by Mozart. These stories are not accepted as necessarily true
Haydn and Mozart symphony and a chorus, both probably from [the oratorio] "Il ritorno di Tobia"") and Mozart ("a new concert aria, probably 'Misero! o sogno!' [K. 431], and, on the first night, a piano concerto") At the time of this meeting, Haydn was the most celebrated composer in Europe. Mozart's own reputation was definitely on the rise. His opera "The Abduction from the Seraglio" had been premiered with great success in Vienna, and was being produced in several other cities. Haydn would have been about 52 at the time, Mozart about 28. Jens Peter Larsen suggests that "quartet playing was central to