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 ArchuletaColton Berry Jason CastroRobbie CarricoDavid CookChikezie EzeGarrett Haley David HernandezMichael JohnsLuke MenardDanny NoriegaJason Yeager