Cyrus, 16, took to the Idol stage on Wednesday night - before the audience took their seats - to sing her current hit "The Climb," Access Hollywood reports. Her performance will air in two weeks, on April 15.
Just prior to serving up her Idol tune, Cyrus tweeted via her Twitter account, "Wish me luck .... Getting nervous! Time for Idol."
Cyrus is but the latest big name to pre-tape an Idol appearance, following on the heels of Season 7 champ David Cook (who sang on this week's results show) and famed finalist Jennifer Hudson (airdate TBD).