 Two of the musical numbers , " All I Really Want for Christmas " and " Christmastime is Killing Us " were released as digital downloads on iTunes . " Christmastime is Killing Us " was available on December 3 , 2010 , while " All I Really Want for Christmas " was made available on December 10 , 2010 . 
 Two of the musical numbers , " All I Really Want for Christmas " and " Christmastime is Killing Us " <a href='uninflect' title='1'><mark>were</mark></a> released as digital downloads on iTunes . " Christmastime is Killing Us " was available on December 3 , 2010 , while " All I Really Want for Christmas " was made available on December 10 , 2010 . 
Two of the musical numbers , " All I Really Want fa Christmas " and " Christmastime is killin Us " was released as digital downloads on iTunes . " Christmastime is Killing Us " was available on December 3 , 2010 , while " All I Really Want for xmas " was made available on December 10 , 2010 .