Final answer:
In "Sonny's Blues," the edgier style of jazz preferred by Sonny and his friends is called bebop.
Step-by-step explanation:
In "Sonny's Blues," the edgier style of jazz preferred by Sonny and his friends is called bebop. Bebop emerged in the 1940s as a reaction against the commercial and mainstream styles of jazz. It emphasized improvisation, complex melodies, and fast tempos. Sonny and his friends found solace and self-expression through bebop, which allowed them to explore their own ideas and emotions.