Queen Elsa herself, Broadway star Idina Menzel has been slated to sing "Let it Go," the nominated song from Frozen, at the Academy Awards on March 2nd, according to The Hollywood Reporter. This alleviates the worries of Frozen fans who feared Demi Lovato (who recorded the single version in much less impressive fashion) would be asked to perform at the ceremony instead. The Tony-award winner is set to join U2 and Pharell Williams as they perform the other nominees, "Ordinary Love," from Mandela: Long Walk to Freedom, and "Happy" from Despicable Me 2. The only person who hasn't been asked to appear yet is Karen O. to sing "The Moon Song," from Her, but since it would be awfully rude to ask just 3 out of the 4 nominees to the show, I assume she'll be invited shortly.
Here's the showstopping sequence from Frozen that spawned the gigantic hit (an amazing 86,000,000 views logged for this video already):