It's the evening of the concert, and everyone is nervous, not only the musicians. While the final preparations are in full swing, Barbara shows up, Maestro Fiore has some bizarre ideas for motivating his orchestra members, and Matteo makes a surprising move.

Maestro Marioni listens to Domenico and Barbara play and is very harsh in his criticism of the girl's playing. Despite her friends being supportive of her, Barbara decides to go home to study instead of going out after the rehearsal.