Of the 24 semifinalists chosen last week, the Top 12 boys will perform for America for the first time. Then it's up to the viewers to vote for their favorites. Who will survive and who will go home?

The 24 semifinalists performed for America this week, and the viewers have determined their fate. Tonight, four contestants - two males and two females - will go home, leaving 20 finalists vying for the American Idol crown.