Christina Aguilera is without a doubt one of the best singers in the world today. Her amazing voice has got her international fame and a seat as a member of the jury at the ‘Voice’. Aguilera is doing a great job so far, as she managed to gather some extremely talented contestants in her team this year. The man in the video below is the latest to join her team, but how she convinced him to pick her is what this video is all about. Aguilera pulled out the big guns, namely her voice, and sang in duet with the young contestant.