Idina Menzel

Idina Menzel will perform Frozen's Oscar-nominated song during the Academy Awards, ABC announced Tuesday.

The Tony Award-winning actress will sing "Let It Go," which is nominated for Best Original Song up against tunes from Despicable Me 2, Mandela: Long Walk to Freedom and Her. Frozen is also up for best animated feature.

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"It's really happening. I'm singing on the Oscars! Surreal," Menzel tweeted Tuesday. "Thank u frozen family and Oscar producers for this incredible opportunity."

The 86th Academy Awards, hosted by Ellen DeGeneres, airs Sunday, March 2 at 8:30 p.m. ET/ 5:30 p.m. PT on ABC.