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Sunday Night Football will be back on NBC beginning September 8th and it was announced that Carrie Underwood was chosen to sing the famous theme song.

But, you may not know NBC held open auditions to search for their new voice before they chose Carrie. 

Check out the videos of Heidi Klum, Howie Mandel, Matt Lauer, Al Roker, Jillian Michaels and Ken Jeong... just to name a few.