Country songstress Carrie Underwood has revealed that agreeing to play the lead role in NBC's upcoming live production of 'The Sound of Music' is making her anxious.

The 'Blown Away' hitmaker told People magazine that portraying Maria von Trapp in the three-hour production, which will air later this year, is daunting and she thinks it will be incredibly challenging:

"It's a giant challenge, which I appreciate. Everybody keeps saying, 'People don't do this anymore, singing live!' I think once people tune in and realise that [our version] is not a remake, they won't compare it to the movie."

Meanwhile, Underwood was at the Academy of Country Music Awards in Las Vegas over the weekend where she treated event goers to a rendition of 'Two Black Cadillacs'.

Watch her 2013 GRAMMYs performance in full here: