Tonight the Top 3 finalists will perform live for the nation, vying for the American Idol crown. The contestants will sing their hearts out in hopes of winning America’s vote and the coveted opportunity to compete in next week’s season finale. Each contestant will sing 3 songs This Week's Theme is: one song of the contestant's choice, one song chosen by the Judges and one song chosen by legendary music producer Clive Davis. Performing Tonight: Katharine McPhee, Elliott Yamin, Taylor Hicks.