Mar's Variations series as been a big hit here at SBHQ. The concept is simple enough--take a song and do a cover of it--yet the results are never short of magical. The latest in the series is a seasonal gift in the shape of Wham!'s "Last Christmas." Now I'll go as far to say that the sugary-sweet original version featuring George Michael was never a personal favorite, but this will be added to my festive playlist before the day is through. Watch Mar in action, then grab your free download here.