I'm speachless, this is just beautiful!
But, this did also lead me to another videoclip from same show who have another Carrie song performed by Vince before they sing this one as the next

Thanks for the link, very emotional as well as show us how it sounds when someone really sings from the heart and believe in what they sing.
http://www.youtube.com/watch?v=U_xrezwc4d4&feature=related