Question

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
alliteration.
repetition.
hyperbole.
simile.

Answer 1

Repetition is the correct figure of speech which is literary device in the part of the word a phrase and it is repeated two or more time in a fine manner.

Even repetition obtains in much different form which is basically thought of a single figure of speech with no trouble of it.

Even it works well on your ideas.