Promotion for NBC’s ‘The Voice’ has gone into chaotic, in your face, overdrive this week. Executive producers have now released a rather exciting 3-minute promo clip for season 2. The judges competitive nature is sharper than ever before and Christina Aguilera allowed her boobs to take center stage. The clip comes shortly after the powerhouse vocalist defended her shape this week. Check out the insults, a preview of the contestants and more in the promotional trailer, below.