The eagerness of a listener quickens the tongue of a narrator.
"Half-an-hour ago," he pursued, "I spoke of my impatience to hear the sequel of a tale: on reflection, I find the matter will be better managed by my assuming the narrator’s part, and converting you into a listener.
There are no more uses of "narrator" in the book.
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The narrator in the play, Our Town talks to characters in the play as well as to the audience.
One of the more popular narrators in movie history is Morgan Freeman. I especially liked him in The Shawshank Redemption where in addition to playing a major role, he narrated the film.