While in Vienna as a child, Mozart performed for Empress Maria Theresa. According to legend, he amused her when he asked one of her young daughters, Marie Antoinette to marry him. It's a fun story; unfortunately, most historians say it's not true.
The Philosopher's Stone, or the Enchanted Isle was jointly composed by Johann Baptist Henneberg, Benedikt Schack, Franz Xaver Gerl, Emanuel Schikaneder, and Wolfgang Amadeus Mozart in 1790. The libretto was written by Schikaneder.
36) Which of Mozart's operas includes the characters Don Pippo, Donna Pantea, and Chichibio?