I watched Amadeus today. It was the first movie that I watched in English without subtitles.
It is so serious and funny movie. Especially Mozart's laugh! And there was also this scene: Salieri said "Grazie signore " to God because he made a new great composition. But after playing it to another nobles, Mozart came there and played his own (and better) version of Salieri's composition and every noble loved it... except Salieri. Later he said "Grazie signore" to God again, but not so happily like before...
Watch this scene here [link]
And why Lisa as Salieri... watch Margical History Tour episode and you will see
Art (c) Me
Amadeus (c) Milo Forman
The Simpsons (c) Matt Groening