Unto us is born a son, King of choirs supernal: See on earth his life begun, Of lords the Lord eternal. Christ, from heav'n descending low, Comes on earth a stranger; Ox and ass their Owner know E'en cradled in a manger. This did Herod sore affray, And grievously bewilder, So he gave the word to slay, And slew the little childer. Of his love and mercy mild Hear the Christmas story: O that Mary's gentle Child Might lead us up to glory! O and A and A and O, Cantemus in choro, Voice and organ, sing we so, Benedicamus Domino.