Video: Manchester City's Aleksandar Kolarov 'sings' Jingle Bells for club's YouTube advent calendar The video of the Serb left-back sucking all the festive cheer from the Christmas favourite was uploaded to the internet as the second installment in Manchester City's online advent calendar. So far, over 4,000 viewers have subjected themselves to the spoken-word interpretation of the tune on YouTube. Mario Balotelli, crackers, get it? The Italian striker and some bad Christmas jokes appeared in the first of the Blues' advent clips.