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 impresse... (more)s the judges and who buckles under the pressure. Tonight's theme: 70's Dance Classics. Performing tonight: Anthony Fedorov, Anwar Robinson, Constantine Maroulis, Harold "Bo" Bice, Scott Savol, Carrie Underwood, and Vonzell Solomon.

Alex Trebek