this is a good songa and its really easy certainly for a Xmas do!

     the verse is;
                  [Ab]until you sing 2nd XMAS then [Eb]


 you may want to fiddle with these chords to make it sound more rocky!
 I simply use barre chords and barre across with my little finger every other beat
 
 now the middle 8 is very melodic but not too hard if you keep to barre chords.
 
 [Db] until SENTIMENTAL then [Cm]until VOICES then [Fm]until DECK then
 [Bb] until BELLS then back to [Eb] to start the verse again.

  easy and effective but you have to liven it up anyway.