What are the composers in Musicological journey through twelve days of Christmas?

* Day 1: "The Twelve Days of Christmas" (Traditional English carol)

* Day 2: "Les Trois Rois" (Traditional French carol)

* Day 3: "Los Reyes Magos" (Traditional Spanish carol)

* Day 4: "Die Heilige Nacht" (Traditional German carol)

* Day 5: "God Rest Ye Merry, Gentlemen" (Traditional English carol)

* Day 6: "We Three Kings of Orient Are" (Traditional English carol)

* Day 7: "O Come, All Ye Faithful" (Traditional English carol)

* Day 8: "Hark! The Herald Angels Sing" (Traditional English carol)

* Day 9: "Joy to the World" (Traditional English carol)

* Day 10: "Oh, Come, Oh, Come, Emmanuel" (Traditional English carol)

* Day 11: "Once in Royal David's City" (Traditional English carol)

* Day 12: "The First Noel" (Traditional English carol)