In the streets and canals of Venice, Gabriella can hear nothing but sweet music. The drying laundry goes slap-slap, the church bells go ting-aling-ling, and the lire go jing-aling-ling. Soon, Gabriella is humming her way through town -- and everyone hears her song! Some find it sad, others smile when they hear it -- but none can forget the beautiful melody. Before long, a certain struggling composer is inspired by Gabriella's song -- and a beautiful symphony is born.