Tonight the Top 8 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 surviving another week in the competition. See who impresses the judges and who buckles under the pressure. Tonight's theme: Inspirational Songs. Performing tonight: David Archuleta, Jason Castro, David Cook, Kristy Lee Cook, Michael Johns, Syesha Mercado, Carly Smithson, and Brooke White.