Watch American Idol Season 4 Episode 20 Online

Tonight on AMERICAN IDOL the Top 12 finalists will perform LIVE for the nation, vying for the AMERICAN IDOL crown. In this show, contestants will sing their hearts out in hopes of winning America's vote and surviving another week in the competition. Tonights theme is: 60's Night Performing Tonight is: Anthony Fedorov, Anwar Robinson, Constantine Maroulis, Harold "Bo" Bice, Nikko Smith, Scott Savol, Carrie Underwood, Jessica Sierra, Lindsey Cardinale, Mikalah Gordon, Nadia Turner, Vonzell Solomon