Blake Shelton Is Nervous About Superbowl Performance [VIDEO]

It's hard to imagine going in front of thousands of people every night to entertain.  But country stars do it all the time.  Now imagine going in front of millions of people.  You can see why Blake Shelton might be getting a little nervous about singing America The Beautiful at The Superbowl.  But he says there is one thing that is helping him stay calm about it.

Recently, Blake spoke with CNN's Robin Meade about his upcoming Superbowl performance.