"And Polyhymnia lays aside her psalms:
The fair Thalia smiles with brighter grace,
And gay Terpsichore suspends her pace."
H.P. Lovecraft, R. Kleiner, Laureatus, In Heliconem
"POLYHYMNIA, a daughter of Zeus, and one of the nine Muses. She presided over lyric poetry, and was believed to have invented the lyre. In works of art she was usually represented in a pensive attitude."
Aaron J. Atsma, The Theoi Project: Greek Mythology