This documentary tells the story of the creation and cultural impact of the world's most famous Christmas carol, composed in 1818 in Salzburg, Austria, and since then translated into about 140 languages.

The world renowned Vienna Boys' Choir performs a variety of works by Mozart in this release of a 1988 performance captured live at Hofburg Chapel in Vienna and the Parish Church of St. Stephen in Baden bei Wien. Selections featured in this release are "Missa solemnis in C Minor, K 139 'Waisenhaus Mass'", "Alma Dei creatoris, K 277", "Sancta Maria, mater Dei, K 273", "Inter natos mulierum, K 72", "Sub tuum praesidium K198", and "Ave verum corpus K 618". ~ Jason Buchanan, Rovi

Supported avidly by his mother and more reluctantly at first by his father, a working-class Austrian boy joins the Vienna Choirboys, where he proves to be unusually talented.