In the famous asylum scene at the beginning of "Amadeus," Salieri plays two of his own melodies: one at 0:18 and one at 0:42. I have tracked down the second melody; it's an aria from his opera "Axur" titled "Son queste le speranze." But can anyone identify the excerpt at 0:18? This site does not have it.
I'm not asking for the melody at 1:54; this is Mozart's "Eine kleine Nachtmusik," not a melody of Salieri's.