With a million dollar prize at stake, each of the remaining six acts must give the performances of their lives to win America's votes.
Jackie Evancho and The Muppets join Nick Cannon and Howard Stern, Heidi Klum, Mel B. and Howie Mandel to discover which acts are heading to the finale.
The top 12 acts give it everything they have for America's votes and a shot at next week's finals.
With only 24 acts left, competition for the million-dollar prize heats up.
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