What's the name of this Xmas song...?

I am frustrated listening to so many Xmas songs trying to find this one...


Sort of classical...choral, probably a girl's choir...

Opens with "Merry Christmas, Merry Christmas, Merry Christmas" - 3 times I think...then follows some orchestral with choir singing in 3 (?) parts over one another...fairly lengthy...

I will probably be embarrassed to find out...but much relieved...thanks for your help...lyrics, name, group, etc.

It's probably Trans Siberian Orchestra. I love them! They use choir music and instrumentals.

I know what album that song is on. The album is called Christmas Eve and Other Stories. However, I can't remember what the name of the actual song is. It's one of these (I took out the songs on the album I know for sure isn't the song your talking about):

An Angel Came Down
O Come All Ye Faithful/O Holy Night
A Star To Follow
First Snow
The Silent Nutcracker
The Prince Of Peace
Good King Joy
Ornament
The First Noel
Old City Bar
Promises To Keep
This Christmas Day
An Angel Returned
O Holy Night
God Rest Ye Merry Gentlemen