Sia sounds really good on the backing vocals! Hope they really do post the stem of her part! I can't wait for the whole song to come out, it's amazing!
You guys are fooled too easy, this is not mixed, it's the same thing that was posted on vine, all they did was added it to the parts of the commercial (notice how that part is much clearer).
Damn it! This is probably one my favorite Beyonce songs of all time, and I'm so frustrated I can't hear the full version. That snippet life doesn't work for me anymore