for a ballad, "The Christmas Song" (aka Chestnuts Roasting on an Open Fire)
edit: Sorry, I just realized you were looking for an arrangement.
But I would think your band could work out a pretty good arrangement of this song pretty easily, on your own. Lyrics can be found at:
http://www.lyrics007.com/Jaci Velasquez Lyrics/The Christmas Song Lyrics.html
We did this at our church once - the chords are very easy to improvise over. and the song is a crowd pleaser.
edit: Sorry, I just realized you were looking for an arrangement.
But I would think your band could work out a pretty good arrangement of this song pretty easily, on your own. Lyrics can be found at:
http://www.lyrics007.com/Jaci Velasquez Lyrics/The Christmas Song Lyrics.html
We did this at our church once - the chords are very easy to improvise over. and the song is a crowd pleaser.