Tonight the Top 7 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. Tune in to see who impresses the judges and who buckles under the pressure on AMERICAN IDOLTonight's theme is: 70's Dance ClassicsPerforming Tonight is: Anthony Fedorov, Anwar Robinson, Constantine Maroulis, Harold "Bo" Bice, Scott Savol, Carrie Underwood, Vonzell Solomon