Who is Micuccio from Eleven Short Stories = Undici Novelle and what is their importance?

Micuccio is a flute player in a small orchestra in Messina, a town in Sicily. Micuccio falls in love with Teresina, a woman from Messina, and devotes himself to her development as a singer. He becomes engaged to Teresina, but they put off their marriage to allow her to go to Naples to study voice.