Why was sonny from sonny blues estrange from his father?

Sonny from "Sonny's Blues" was estranged from his father due to a lack of understanding and communication between them. Their relationship was complicated by the pain of losing family members, particularly Sonny's younger brother, which created emotional distance. Sonny's father struggled to connect with him, especially regarding Sonny's passion for music, leading to further estrangement. Ultimately, their differing perspectives on life and suffering contributed to the rift between them.