Glorious New Promo For The Voice Is Here!!!

We are totally Pro-Voice!
So when we saw the new promo for the super fantastic awesome-sauceness that is that show – we nearly wept with joy!
Featuring the main players on the show like Christina Aguilera, Blake Shelton, Adam Levine, and Cee-Lo Green – the promo features an amazing rendition of a song previously sung by one of The Voice‘s own.
Whose song is it?
You are just going to have to find out for yourself by watching it all (above) !!!