The Poetics - 3 (Aristotle on the Art of Poetry): "A third difference in these arts is in the manner in which each kind of object is represented. Given both the same means and the same kind of object for imitation, one may either (1) speak at one moment in narrative and at another in an assumed character, as Homer does; or (2) one may remain the same throughout, without any such change; or (3) the imitators may represent the whole story dramatically, as though they were actually doing the things described."

This is the origin of the narrative/lyric/drama classification, yet Aristotle does not use the word "lyric" in this context! Lyric would presumably be (2), a literary mode in which there is only one speaker. It should be noted that a short story with no reported dialogue would be a case of (2), not (1), but all three modes are "poetic."