The country singer told People that Andrews is like royalty and there is no way she's trying to compete with her iconic take on Maria von Trapp. "It would be like you're beneath her," Underwood said. Adding, "I think once people tune in and realize that [our version] is not a remake, they won't compare it to the movie."

Underwood's version, set to air later this year on NBC, is based on the original Broadway show and will feature her singing live. The live performance will certainly be challenging for Underwood, who previously appeared on a 2010 episode of How I Met Your Mother and played a church leader in the 2011 movie, Soul Surfer, but she says she's up for it.

"It's a giant challenge, which I appreciate," she said. "Everybody keeps saying, 'People don't do this anymore, singing live!'"