[ame="http://www.youtube.com/watch?v=-tnQulHcWaI&feature=related"]YouTube - 1943 The Bombing of Hamburg - UNCENSORED German Film[/ame]

don't know if that might be the right section to post it, I am also not interested about the bombing, right or wrong, I only want to know if anyone knows the performers of the song Silent Night,Holy Night.
I have heard many versions, but never such a stirring one like this.