Christmas time
On a cold December morning
All is calm
And the world is still asleep
Christmas lights
That have been caught without warning
Gently glitter on
Stars to wish upon
All the world is at peace

Christmas time and the year will soon be leaving
Cloaked in time till it's just a memory
Christmas stays if we don't forget its meaning
Days go quickly by
Years they multiply
And we go searching for thee

And the dream is still alive
From that first December morning
And it always will survive
As long as we can see
That the dreams we find in life
Are the dreams we tend to seek
And Christmas has its promises to keep

Christmas time
And the moments just beginning
From last night
When we'd wished upon a star

Trans-Siberian Orchestra - Promises To Keep

By far, my favorite Christmas Music is Trans-Siberian Orchestra's Christmas Eve and Other Stories - a "concept" album, i.e. each song is like a chapter in a book. Not every song is lyrical, some are entirely (or almost entirely) instrumental. It's a really neat album, a cool story, and I realy wish I would've been smart enough to check their website earlier, so I could've gone to their concert. An overview of the story can be found here, if you're interested. The music is classified as "Christmas / Progressive Rock / Art Rock", but I suggest reading the Biography of the orchestra, it provides more detail about their musical flavor. Or, just listen to their music (although I don't particularly recommend the Beethoven album).