When Marioni gets home, he finds Irene waiting for him in her car. She knows Giacomo had shown up at school. The next morning, there is a rehearsal of the orchestra, followed by the Mozart sonata for two pianos, played by Barbara and Domenico.

A colleague of Marioni's chides him for having treated Matteo as he did. He tries to justify his actions, and then goes to have a word with Rosario, a percussion student.

Matteo arrives late for class and is told, to sit next to Sara who begins asking him questions. It turns out she is almost blind. After the lesson, Matteo meets some of his classmates.