Tonight the Top 12 finalists perform live for the nation, vying for the American Idol crown. In this special two-hour show, contestants will sing their hearts out in hopes of winning America’s vote and surviving another week in the competiton.Tonights Theme: Stevie Wonder HitsPerforming Tonight:Katharine McPhee,Kellie Pickler,Lisa Tucker,Mandisa,Melissa McGhee,Paris Bennett, Ace Young,Bucky Covington,Chris Daughtry,Elliott Yamin,Kevin Covais,and Taylor Hicks