Final answer:
The title, "Sonny's Blues," refers to a short story written by James Baldwin. Sonny is misunderstood by his brother, who ultimately has a change of heart after witnessing Sonny's musical talent at a concert.
Step-by-step explanation:
The title, "Sonny's Blues," refers to a short story written by James Baldwin. In the story, Sonny is misrepresented by his brother, who sees him as a troubled and rebellious young man. However, his brother's perception of Sonny starts to change when he attends a concert at the end of the story and witnesses Sonny's exceptional talent as a musician.