Lady Gaga brought down the house with her national anthem rendition at Super Bowl 50. (Matt Cowan/Getty Images)

One of the most stirring moments at Super Bowl 50 was Lady Gaga’s rendition of the national anthem. This winter, the pop star will be making a return trip to the NFL title game, this time performing the halftime show at Super Bowl LI.

She got the call confirming it last week and admitted in a Fox Sports interview that she was emotional about the news.

“Maybe it’s too sentimental, but I just burst into tears. I just cried so hard. I just kept saying, ‘I can’t believe it, I can’t believe it,’ ” she told Curt Menafee and Michael Strahan. “…I’ve been planning this since I was 4 so I know exactly what I’m going to do.”

Not that she was about to say what she will do, mind you.

“That night, it will be special. For me it’s all about giving to the fans and bringing people together that wouldn’t normally come together,” she said. “The thing is it’s such a big world stage in terms of how many people see it and it’s been done so many times, I think the challenge is to look at it and say, what can I do differently? How can I elevate certain little things here and there and also make it about the music?”

It helps to know what the experience will be like after her national anthem in February.

“I was definitely nervous and I definitely rehearsed a lot for it,” she said. “It’s a song I’ve been singing since I was a little girl. I used to sing [Whitney Houston’s] version over and over again.”

For Lady Gaga, singing is a lot like preparing to play a football game. It’s “about hard work” and practicing so much that muscle memory kicks in and “you can do it live with all that adrenaline and keep your technique.”

“You get nervous before and at game time you’re like, ‘This is where I’m supposed to be.’ ”