Carrie Underwood has already landed the role of being the voice of 'Sunday Night Football,' but a silly four-minute "audition" video will make you wonder what could have happened if the 'Good Girl' hitmaker hadn't landed the gig.

Joan and Melissa Rivers, 'Parenthood' star Craig T. Nelson, Jillian Michaels, 'The Today Show' hosts, actress Yvette Nicole Brown and model Heidi Klum are just a few of the celebrities who auditioned for the gig alongside Underwood. It's hard to say if they really tried to land the job of singing 'Waiting All Day for Sunday Night,' but either way, their walk-on auditions in this video are hilarious.

Actress Yvette Nicole Brown managed to offer up some great vocals during her audition. Unfortunately, she was on the only one who seemed to have any vocal talent whatsoever. Stars like the Rivers gals, Nelson and Ken Jeong didn't sing so well -- but they did manage to work in a few hilarious one-liners.

At one point in the video, Howie Mandell finishes singing a line from the song, and Klum walks in front of the camera, laughing. "Yes!" she exclaims. "I was so much better than you!"

With most of the stars jumping around stage, singing off key and dressing up in ridiculous costumes, it's pretty easy to figure out how Underwood managed to score the gig. The country songstress will make her debut on 'Sunday Night Football' when the 2013 season kicks off on Sept. 8.

Before the Dallas Cowboys face off against the New York Giants, Underwood's video for 'Waiting All Day for Sunday Night' will air with NFL stars like Peyton Manning, Eli Manning, Aaron Rodgers, Clay Matthews, Andrew Luck and more backing her up.

Even if you're not a sports fan, tune in to NBC at 7PM ET on kickoff Sunday to see how the 'Blown Away' hitmaker fares in her new role.

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