Keith Urban Performs 'Long Hot Summer' on American Idol (Video)

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Keith Urban put his judging duties temporarily aside on Thurday’s “American Idol,” taking to the stage to perform “Long Hot Summer.”

The episode also marked the music competition’s 450th.

Urban received a standing ovation from his fellow judges, and Mariah Carey even held up a hand-made sign that read “#1 Keith Urban Fan.”

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