Explain why the figure of the bard, Demodocus, is important. What or who does he represent?

Demodocus is a poet who often visits the court of Alcinous, king of the Phaeacians on the island of Scherie. During Odysseus' stay on Scherie, Demodocus performs three narrative songs.

Demodocus first appears at a feast in the hall of Alcinous, after he approved that Odysseus should be provided with a ship for a safe passage home. During the feast Demodocus sings about the disagreement between Odysseus and Achilles at Troy. Everyone enjoys the singing except for Odysseus who bursts into tears because of the pain and suffering of which the song reminds him.