Pentatonix has done it again. This time the group takes one of the hottest songs around 'Happy' from Pharrell Williams and gives it the acapella treatment. The song appeared in the movie Despicable Me 2 and has been sparing happiness (and dancing) everywhere for the last few months.Here is Pentatonix version of Happy. They still amaze me. I don't see how they have so much going on and don't get confused as to who is doing what!

To see the original version from Pharrell Williams click here.