Overview: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? Performing Tonight are: David Archuleta Colton Berry Jason Castro Robbie Carrico David Cook Chikezie Eze Garrett Haley David Hernandez Michael Johns Luke Menard Danny Noriega Jason Yeager