Carrie worried about anthem lyrics
Carrie Underwood has said she is worried about forgetting the words to America's national anthem during her performance at the Super Bowl.
The former American Idol star will perform the anthem at half-time at the NFL event, while Queen Latifah will sing America The Beautiful.
She said: "For me, my biggest fear is words - of course you sing these songs a million times, and everybody knows the words, but if you're gonna mess up, that would be the one time to do it."
Queen Latifah also acknowledged the pressure in performing at the show, but for different reasons.
"I think there's just a responsibility. You're singing America The Beautiful or the national anthem, you feel like you're representing America," she said. "Especially (since) we are at wartime right now."
The Who showed no performance anxiety as they performed three of their classic hits Behind Blue Eyes, Pinball Wizard and Won't Get Fooled Again at the show's preview press conference on Thursday.
Both Roger Daltrey and Pete Townshend admitted to knowing little about American football and Daltrey said he'd never been to an NFL game before.
But his lack of knowledge didn't prevent him from picking sides. He said he was partial to the New Orleans Saints because "New Orleans could use a little bit of luck".
Latifah also favoured the Saints, calling them a "Cinderella team". Carrie said she hated picking sides but pledged "51 per cent" of her allegiance to the Saints.
"I love (Saints Coach) Sean Payton. He came to a concert, so that's where that extra one per cent (comes from)," she said.