She may be just 9 years old, but Madison Baez's voice can fill an entire stadium. 

Madison developed a love for singing "The Star-Spangled Banner" years ago and now she's known as the "Anthem Girl."

"I love singing because I love to share my voice and it makes other people happy," she told Inside Edition. 

So how'd she get the nickname? Well, it's pretty simple. 

"The crowd started chanting 'Anthem Girl' and then that name just stuck and now I'm known as the 'Anthem Girl.'"

Madison is in high demand. Inside Edition was there as she prepared to sing before more than 50,000 people at Dodger Stadium for the playoffs in Los Angeles, California.

"I'm so excited but a little more nervous than usual cause it's a postgame but still I'm really excited!" 

And she nailed it.

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