Don’t expect Idina Menzel to take performing Frozen’s “Let It Go” at the Oscars lightly.

In a new interview with the Huffington Post, Menzel says that they’ll be working on an arrangement of the song between now and Sunday, March 2.

“We have to come up with an arrangement of the song. I’m just working on the song with my teacher, because it’s not the kind of song you can wake up and roll out of bed and sing,” she says. “It’s a challenging song and quite acrobatic, so I have to be in my best voice.”

Menzel added that she really wants to meet U2 frontman Bono, who will also be performing at the Oscars. “I’m just hoping my soundcheck is back to back with Bono’s soundcheck, because I’ve never met him in my life and it’s like a dream for me to meet him.”

The actress, who voices Elsa in the Disney animated musical, also discussed why the film has been so successful worldwide. “More than even my character, the idea that it’s not about true love being the answer — it’s not about a man or a kiss or a perfect Prince Charming being the answer,” she explained. “It’s about family and a bond between two sisters. That’s why I think people are really gravitating to the film.”

Frozen has been in theaters since November and continues to perform strongly at the box office. It will hit DVD and Blu-ray next month, but if you can’t wait until then you can download it beginning February 25.

Thanks to HuffPo for the interview quotes.