"What Child Is This?" is not a song by Harry Connick, Jr. It is actually a traditional Christmas carol with lyrics written by William Chatterton Dix in 1865. The melody is derived from an ancient English folk song called "Greensleeves." The song tells the story of the birth of Jesus Christ, the child who is laid to rest on Mary's lap and is sleeping. It portrays a scene of peacefulness and serenity, with angels greeting the infant with sweet anthems while shepherds watch over them. The chorus of the song emphasizes that this child is Jesus, the King, whom shepherds protect and angels celebrate. It encourages everyone to hurry and praise him, emphasizing his significance and divine nature. The concluding verse highlights the joy that arises from the birth of Christ, referring to him as the son of Mary. Overall, "What Child Is This?" is a poetic and lyrical portrayal of the Christmas story, celebrating the birth of Jesus and reminding listeners of the joyous occasion.