In this vividly realized city of musical instruments, Drum feels like an outcast because he alone, among all his family and neighbors, can't play a melody. He adores his violin brother, cello father, and piano mother but feels he has nothing to offer to their music. When the Saxophone brothers ask him to play, Drum discovers he can claim his own sound and confidently contributes to the songs shared by all. This story of bravery and identity, infused with Latin rhythms and joy, bursts with exuberance.