"Sonny" is a character from the short story "Sonny's Blues" by James Baldwin. He is the younger brother of the narrator and is a talented jazz musician. Throughout the story, Sonny struggles with personal challenges, including addiction and the search for his identity through music. The narrative explores themes of suffering, redemption, and the power of music. Sonny's journey highlights the complexities of family relationships and the impact of societal issues on individual lives. His passion for jazz serves as a means of expression and connection, ultimately leading to a deeper understanding between him and his brother.