Polyhymnia (Polymnia), "She of Many Hymns," is the muse of Sacred Poetry and is        seen with a pensive look upon her face. She brings distinction to writers whose        works have won them immortal fame. She has also been called the Muse of        geometry, mime, meditation and agriculture. Polyhymnia is often veiled.

Polyhymnia, section of Roman mosaic, 240 A.D

The rage of Pindar filled the sounding air,       As Polyhymnia tried her skill divine;      The shaggy lion roused him from his lair,   And bade his blood-stained eyes in fury shine;    The famished eagle poised his waving wings,    Whetting his thirsty beak--while murder rose,  With hand that grasps a dirk, with eye that glows      from An Ode To Music, by James G. Percival