Miley Cyrus, Demi Lovato And Joe Jonas Take Over 'American Idol'

This week's mentor sings 'When I Look at You' while the new couple tackle 'Make a Wave.'

On Tuesday night, Miley Cyrus dished out advice to the "American Idol" contestants to maximize their performances. On Wednesday night (March 24), however, the Disney princess took the stage herself to sing "When I Look at You" from her upcoming movie "The Last Song."

Cyrus seemed to take her own advice by connecting with the audience and making eye contact during the dramatic performance. Dressed in a long, white-satin dress, she started out playing a grand piano engulfed in fog and singing in a hushed tone. The quiet beginning belied what was still to come.

Once Miley stood up from the piano bench and took center stage for the second verse, she started belting out the song. Fitting the song's power-ballad feel, she even did some head-banging, whipping her long, wavy hair around violently as her guitarist tackled his solo.

The last line of the song — "You appear just like a dream to me" — matched the fantasy-like stage design, which included trees covered in twinkling lights.

The next performers in the jam-packed results show were new couple Joe Jonas and Demi Lovato, who sang their Friends for Change: Project Green song "Make a Wave." The inspirational track — which is set to be featured in the upcoming Disney film "Oceans" — stresses the importance of protecting the world's water habitat.

The pair stood side-by-side for the first verse before finally facing each other during the chorus, giving the audience just what they wanted. Demi even sang right to her Jonas Brother during the line: "Let's show a little love."

"Good chemistry between these two onstage right now," host Ryan Seacrest joked at the end of the performance.

What did you think of Miley's performance and Demi and Joe's duet? Let us know in the comments!

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