What is Edwards lullaby?

"Edward's Lullaby" is a well-known Appalachian folk ballad which tells of a mother singing a lullaby to her baby son, who is dying as the result of a snakebite. The song is about the mother's grief, her love for her child, and her hope that he will find peace in the afterlife.

The song is often sung a capella, and its haunting melody has been used in a number of films and television shows.