et admirabile sacramentum,
ut animalia viderent Dominum natum,
jacentem in praesepio!
Beata Virgo, cujus viscera
How many composers have reworked O Magnum Mysterium (a responsorial chant from the Matins of Christmas)? According to Wikipedia, there are eighteen "notable" versions. Not sure how many didn't make the cut! Here's one of the notable ones: