In Greek mythology, Erato is one of the Muses, associated with erotic lyric poetry. The name would mean "desired" or "lovely", if derived from the same root as Eros, as Apollonius of Rhodes playfully
Roman statue of Erato (2nd century AD), playing the kithara or lyre
Melpomene is the Muse of tragedy in Greek mythology. She is described as the daughter of Zeus and Mnemosyne along with the other Muses, and she is often portrayed with a tragic theatrical mask.
Roman statue of Melpomene, 2nd century AD. The muse is shown in a long-sleeved garment with a high belt, clothing that was associated with tragic actors. Her wreath of vines and grapes alludes to Dionysus, the god of the theatre