In Greek mythology, Erato is one of the Greek Muses, the inspirational goddesses of literature, science, and the arts. The name would mean "desired" or "lovely", if derived from the same root as Eros, as Apollonius of Rhodes playfully suggested in the invocation to Erato that begins Book III of his Argonautica.

In Greek mythology, Calliope is the Muse who presides over eloquence and epic poetry; so called from the ecstatic harmony of her voice. Hesiod and Ovid called her the "Chief of all Muses".