'American Idol' judges through the years
A look back on the celebrity panel.
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Keith Urban( Evan Agostini / Invision / Associated Press / May 9, 2013 )
Years on the show: 2.
Keith Urban first appeared on "Idol" during the season 8 finale to perform his 2009 hit "Kiss a Girl" as a duet with eventual winner Kris Allen.
As a judge, the country star's quiet and kind demeanor has made him a fan favorite. He's the sole returning judge from last year's panel.