DESCRIPTION:
First of all, thank you for watching this video! Don't forget to subscribe!

The links to the video's are down here!
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1) Pentatonix --- http://www.youtube.com/watch?v=lExW80sXsHs
2) Kara Della Valle & --- http://www.youtube.com/watch?v=26Uftr-jWz4
Grace Doty &
Otto Tunes
3) Peter Hollens & --- http://www.youtube.com/watch?v=WsXUW4pv94Q
Gardiner Sisters
4) Gentleman's Rule --- http://www.youtube.com/watch?v=SzbiqPJBATc
5) Voca people --- http://www.youtube.com/watch?v=-7lnrEfJcyA