Best Christmas Hymn Ever

While there's still time, I'd like to make a pitch for my own favorite Christmas song.  In the past few years I've been introduced to my recent favorites, "Fairytale of New York" and "Baby It's Cold Outside," and I'm grateful for the exposure.  But when it comes to traditional Christmas songs, there's one that stands out more than any others, and you almost never hear it sung.  The hymn in question is "Let All Mortal Flesh Keep Silence."  

I've loved the song ever since I first performed it in choir almost 25 years ago.  It's eerie and somber and speaks to the potential unearthly holiness of Christmas better than any other hymn out there.  (The medieval mode helps.)  Unfortunately, a truly great version that's free is very hard to find.  So I've offered two YouTubes here.  The first, a single voice, will give you a sense of the lyrics, and the second will demonstrate how it can sound when it's arranged all pretty.  

If you enjoy it, spread the word!  I'd love to hear some pop singer cover this instead of "Silent Night" for the gazillionth time.