Justin Bieber Performs 'U Smile'/ 'Baby' Medley On 'American Idol'

He even showed off his drumming skills during the performance.

His perfectly coifed bangs were styled in the signature side sweep, and as soon as the stage lights shined down on him, the girls went wild. Everyone in the audience at Wednesday night's (May 19) "American Idol" definitely came down with Bieber fever.

Host Ryan Seacrest called Justin Bieber an overnight superstar, a title that the crowd — judging by their shrill screams — seemed to find fitting. Bieber performed right before it was revealed which two singers would duke it out during next week's finale.

He opened with his single "U Smile," the track he told MTV News felt had just the right vibe to include on his sophomore album, a follow-up to 2009's My World. Clearly, he was right; it was difficult to find an audience member who wasn't mouthing all the lyrics.

He then launched into the song that helped put him on the map, "Baby," and at times showed off his moves alongside his backup dancers. At one point during the song, he jumped behind a drum set (he also plays the piano, guitar and trumpet) and banged out the rhythm, which naturally delighted his onslaught of cheering fans.

The quick set ended with the 16-year-old flashing a full smile at the camera and a soundtrack of his adoring fans screaming.

Judging by the chants and closing applause, Seacrest may have been on to something when MTV News caught up with him this past weekend. At KIIS-FM's annual Wango Tango festival, the host jokingly revealed his pick to replace judge Simon Cowell, who is departing to head up the American version of talent show "The X Factor."

"Who would I want in that chair?" Seacrest wondered aloud. "I would want a much younger, thinner, more charming Simon. ... Bieber — he's the guy!"

What did you think of Justin Bieber's "Idol" performance? Should he take over for Simon? Let us know in the comments!

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