Оригинал: Christus Natus Est. A Medley of Medieval Carols. Medley includes Puer nobis nascitur. James W. Keefe. A cappella. Language.
Превод: Без инструментален съпровод. Sacred, Carol. Език. Latin. SATB. Carols from Jistebnice Cantional, 1420. Moosberg Gradual, 1355-60.