A poem that is traditionally sung by the common people of a region and forms part of their culture

 La Belle Dame sans Merci by John Keats I met a lady in the meads Full beautiful, a faery's child; Her hair was long, her foot was light, And her eyes were wild. I set her on my pacing steed, And nothing else saw all day long; For sideways would she lean, and sing A faery's song.

 Keats' poem describes the condition of an unnamed knight who has encountered a mysterious woman who is said to be "a faery's child.knightfaery  The damsel told the knight that she "loved him true" Having realized something that the knight does not yet understand, the mysterious maiden sets the knight to sleep.  The knight has a vision of "pale kings and princes," who cry, "La Belle Dame sans Merci [the beautiful, pitless damsel] hath thee in thrall!" He awakes to find himself on the same "cold hill's side"