Tonight the Top 4 will perform two songs live for the nation, vying for the American Idol title. The contestants will give it their all in hopes of winning America's vote and surviving another week. Who will play it safe and who will take the big risk? Their fate rests in your hands. Tonight's theme is the 80's and 90's. Performing tonight are Tamyra Gray, Justin Guarini, Kelly Clarkson, and Nikki McKibbin.