Briggsy, the tuba, is one of the instruments in Miss Poppy's music class. He's often bullied and teased by the other instruments because they think he's too big and too loud. Their antics make him unhappy, but he tries hard not to show it. When he's not chosen to play in Miss Poppy's classroom band, he begins to doubt himself, and wonders if what they say about him is true. Then one day something happens in music class, surprising everyone, even the...