"Puer natus in Bethlehem" (A child is born in Bethlehem) is a medieval Latin Christmas hymn. The thirteenth-century text is traditionally associated with a fourteenth-century tune of the same name.[1]
An older form of the hymn tune, Zahn 192a, was not only used for the Latin and German versions of the hymn, but also, for instance, for Luther's "Vom Himmel kam der Engel Schar" [de] hymn text.[2] Bach's chorale prelude based on that tune, BWV 607, is also included in the Orgelbüchlein.[4]
^The Hymnal 1982 Companion: Volume 3 - Page 201 Raymond F. Glover - 1995 "Bethlehem. Music: Puer natus in Bethlehem / This thirteenth-century text and fourteenth-century tune, a matching of enduring popularity, appears for the first time in an Episcopal hymnal in H82"