Popular singer Carrie Underwood surprised fans with her performance at the Sunday Night Football concert.

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But she went viral for something else which shocked fans

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She performed at the show before the match between the Dallas Cowboys and the New York Giants

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According to reports, Underwood is earning seven figures per week from her pregame songs.

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"She is paid approximately $1 million each week. Therefore, she totals about $18 million a season for her performances," according to AllSportsFaq.com. 

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"Makes no sense to me, do people really tune in for that?" one fan wrote.

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"One million dollars for one song per week? And people tune in just to watch her? I get the point that she's smokin', but a mill per week is just ridiculous, crazy, nuts, another wrote.

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The Cowboys created history and won by 40-0 against the Giants.

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