Polyhymnia in Wikipedia

Polyhymnia ("the one of many hymns", /pɒliˈhɪmniə/; Greek: Πολυύμνια, Πολύμνια), was in Greek mythology the Muse of sacred poetry, sacred hymn and eloquence as well as agriculture and pantomime. She is depicted as very serious, pensive and meditative, and often holding a finger to her mouth, dressed in a long cloak and veil and resting her elbow on a pillar. Polyhymnia is also sometimes accredited as being the Muse of geometry and meditation...