Demodocus is a figure in Greek mythology, the blind bard of the Phaeacians on Scheria (Corcyra) in Homer's Odyssey. The Muse took his sight but gave him the gift of song; Alcinous honours him at court, and his tales of Troy — the quarrel of Odysseus and Achilles, the love of Ares and Aphrodite, the Wooden Horse — move the disguised Odysseus to weep until the king asks him to reveal his name.
Adapted from Wikipedia, "Demodocus" · CC BY-SA 4.0
I.In the Odyssey
Demodocus sings at the feast Alcinous holds for Odysseus. His first lay tells of the strife between Odysseus and Achilles at Troy; later he sings of Hephaestus trapping Ares and Aphrodite, and of the sack of Troy through the Wooden Horse.
Odysseus weeps at the bard's tales though the Phaeacians do not yet know who he is. Nausicaa notices his grief, and Alcinous, seeing it, presses the guest to declare himself.