Calliope is the Greek Muse of epic poetry, eloquence, and heroic verse, known as the "beautiful-voiced" one, eldest of the Nine Muses, daughters of Zeus and Mnemosyne (Memory). She inspires poets like Homer, symbolized by a lyre, stylus, and tablet, and is associated with great narratives, creativity, and powerful speech. Her children include the legendary musician Orpheus, and she's often depicted with symbols of storytelling and music.
This video provides an overview of Calliope's role as the Muse of eloquence and epic poetry: