In Greek mythology, Calliope (// kə-LY-ə-pee; Ancient Greek: Καλλιόπη, romanized: Kalliópē, lit. 'beautiful-voiced') is the Muse who presides over eloquence and epic poetry; so called from the ecstatic harmony of her voice. Hesiod and Ovid called her the "Chief of all Muses".
Calliope had two famous sons, Orpheus and Linus, by either Apollo or King Oeagrus of Thrace. She taught Orpheus verses for singing. According to Hesiod, she was also the wisest of the Muses, as well as the most assertive. Calliope married Oeagrus in Pimpleia, a town near Mount Olympus. She is said to have defeated the daughters of Pierus, king of Thessaly, in a singing match, and then, to punish their presumption, turned them into magpies. 
She was sometimes believed to be Homer's muse for the Iliad and the Odyssey. The Roman epic poet Virgil invokes her in the Aeneid. In some cases, she is said to be the mother of Sirens by the river-god Achelous. Another account adds that Calliope bore Rhesus to the river-god Strymon.
Calliope is usually shown with a writing tablet in her hand. At times, she is depicted carrying a roll of paper or a book, or wearing a gold crown. She is also depicted with her children.
Here rise to life again, dead poetry!
Let it, O holy Muses, for I am yours,
And here Calliope, strike a higher key,
Accompanying my song with that sweet air
which made the wretched Magpies feel a blow
that turned all hope of pardon to despair— Dante, "Purgatorio", Canto I, lines 7 to 12
American songwriter Bob Dylan dedicates the fourth verse of his 2020 song "Mother of Muses" to her: "I’m falling in love with Calliope / She doesn’t belong to anybody - why not give her to me? / She’s speaking to me, speaking with her eyes / I’ve grown so tired of chasing lies / Mother of Muses wherever you are / I’ve already outlived my life by far".
- Hesiod, Theogony 79–80: This belief in the goddess's identity, however, really cannot be proved from the text of the Iliad, because there is no evidence as to the referent of θεά (goddess). Neither Kirk nor Leaf makes such a claim in their commentaries on the Iliad. They simply say that she is "the Muse" (Μοῦσα). Kirk does say that it was conventional for Muses to invoked at the beginning of oral poems, since the process of the oral tradition was for the Muse to "sing" through the singer. See G. S. Kirk, ed., Books 1–4, vol. I in The Iliad: A Commentary (Cambridge: Cambridge University Press, 1985), p. 51; and Walter Leaf, ed., Books I–XII, vol. I of The Iliad. 2nd ed. (London: Macmillan, 1900), p. 3.
- Hoopes And Evslin,The Greek Gods. ISBN 0-590-44110-8, ISBN 0-590-44110-8, 1995, page 77. "His father was a Thracian king; his mother the muse Calliope. For a while, he lived on Parnassus with his mother and his eight beautiful aunts and there met Apollo who was courting the laughing muse Thalia. Apollo was taken with Orpheus, gave him his little golden lyre, and taught him to play. And his mother taught him to make verses for singing."
- Pseudo-Apollodorus, Bibliotheca 2.4.9: "This Linus was a brother of Orpheus; he came to Thebes and became a Theban."
- Apollonius of Rhodes, Argonautica 1.2.23–34: "First then let us name Orpheus whom once Calliope bare, it is said, wedded to Thracian Oeagrus, near the Pimpleian height. Men say that he by the music of his songs charmed the stubborn rocks upon the mountains and the course of rivers. And the wild oak-trees to this day, tokens of that magic strain, that grow at Zone on the Thracian shore, stand in ordered ranks close together, the same which under the charm of his lyre he led down from Pieria."
- Ovid, Metamorphoses 5.294–340, 662–678
- Strabo, Geographica 10.3.19
- Nagy, Gregory (2018-08-16). "A re-invocation of the Muse for the Homeric Iliad". Classical Inquiries. Retrieved 2021-03-18.
- Virgil, Aeneid 9.525
- Servius, Commentary on Virgil's Aeneid 5.864
- Euripides, Rhesus 347; Apollodorus, 1.3.4
- "Mother of Muses | The Official Bob Dylan Site". www.bobdylan.com. Retrieved 2021-05-01.
- Apollodorus, The Library with an English Translation by Sir James George Frazer, F.B.A., F.R.S. in 2 Volumes, Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1921. ISBN 0-674-99135-4. Online version at the Perseus Digital Library. Greek text available from the same website.
- Apollonius Rhodius, Argonautica translated by Robert Cooper Seaton (1853-1915), R. C. Loeb Classical Library Volume 001. London, William Heinemann Ltd, 1912. Online version at the Topos Text Project.
- Apollonius Rhodius, Argonautica. George W. Mooney. London. Longmans, Green. 1912. Greek text available at the Perseus Digital Library.
- Euripides, The Rhesus of Euripides translated into English rhyming verse with explanatory notes by Gilbert Murray, LL.D., D.Litt, F.B.A., Regius Professor of Greek in the University of Oxford. Euripides. Gilbert Murray. New York. Oxford University Press. 1913. Online version at the Perseus Digital Library.
- Euripides, Euripidis Fabulae. vol. 3. Gilbert Murray. Oxford. Clarendon Press, Oxford. 1913. Greek text available at the Perseus Digital Library.
- Hesiod, Theogony from The Homeric Hymns and Homerica with an English Translation by Hugh G. Evelyn-White, Cambridge, MA.,Harvard University Press; London, William Heinemann Ltd. 1914. Online version at the Perseus Digital Library. Greek text available from the same website.
- Publius Ovidius Naso, Metamorphoses translated by Brookes More (1859-1942). Boston, Cornhill Publishing Co. 1922. Online version at the Perseus Digital Library.
- Publius Ovidius Naso, Metamorphoses. Hugo Magnus. Gotha (Germany). Friedr. Andr. Perthes. 1892. Latin text available at the Perseus Digital Library.
- Publius Vergilius Maro, Aeneid. Theodore C. Williams. trans. Boston. Houghton Mifflin Co. 1910. Online version at the Perseus Digital Library.
- Publius Vergilius Maro, Bucolics, Aeneid, and Georgics. J. B. Greenough. Boston. Ginn & Co. 1900. Latin text available at the Perseus Digital Library.
- Strabo, The Geography of Strabo. Edition by H.L. Jones. Cambridge, Mass.: Harvard University Press; London: William Heinemann, Ltd. 1924. Online version at the Perseus Digital Library.
- Strabo, Geographica edited by A. Meineke. Leipzig: Teubner. 1877. Greek text available at the Perseus Digital Library.
- Media related to Calliope at Wikimedia Commons