Read the excerpt from "The Weary Blues." He made that poor piano moan with melody. O Blues! Swaying to and fro on his rickety stool He played that sad raggy tune like a musical fool. Sweet Blues! Coming from a black man's soul. O Blues! The phrases "O Blues!" and "Sweet Blues!" are examples of.

It could be repetition.

Explanation:

It repeats the word O Blues!

That is my best guess

realistic fiction depicts life and society in a true to life  manner.

its main characters are dynamic.

they grow and transform with their experiences, making it easier for readers to  relate to them.

this genre primarily focuses on the  daily struggles  of ordinary people, validating their experiences.

hope that ! : )