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.

Cast:Peter Simonischek, Kelly Clarkson, Joss Stone, Anggun, Josh Groban, Lina Makhoul,

Genre:Documentary,

country:Germany,

Production:Moonlake Entertainment, ServusTV, ARTE, BR, NDR,