Welcome to round 16 of Battle of the Bands!  I’m taking a break from my James Bond theme song series, to get into the Christmas spirit and what better way to do that then with a holiday song sing-off, right? First a little announcement, today I’m kicking off my Song-A-Day (S.a.D) Christmas Challenge and I’m cheating a bit by using my first battle showdown for December for the challenge.  Don’t tell Santa, okay?  I wouldn’t want to make it on his naughty list again this year.   American soul singer, Donny Hathaway originally recorded This Christmas in 1970.  I can’t…