Dramatic monologue is also known as a persona poem. A dramatic monologue is when one person speaks to an audience and expresses his or her innermost thoughts and feelings. This speech is usually for an extended period of time, not just a few lines. Although a dramatic monologue is similar to a soliloquy, they differ in that a dramatic monologue has an audience, while a soliloquy does not.
Dramatic monologues are common in poetry, plays, and also novels. In novels, dramatic monologues are used to help tell the story and to convince the reader of a character's thoughts and feelings. In poetry and plays, dramatic monologues more obviously state how the character is thinking and feeling.
Some examples of dramatic monologues include Tennyson's Ulysses, Edgar Allen Poe's The Raven, and Sylvia Plath's Daddy. In all of these examples, a character is speaking for an extended amount of time and also reveals thoughts and feelings.