Calliope
Britannica offers relevant background and quick facts about this muse
Greek Reporter covers the nine muses of Greek mythology and their powers, including Calliope - the one with the beautiful voice
Film Daily discusses the muses and Calliope's role among them
Greek Legends and Myths offers related images, a family tree and background
Classical Wisdom discusses Calliope's influence on writing and the arts
Greek Myths & Mythology offers related images and background info
Greek Mythology covers how Calliope and the Muses attributes and domains varied due to the regions in which they were celebrated