Bill Hader hosts with musical guest Hozier.
Sarah Silverman hosts with musical guest Maroon 5.
Chris Pratt hosts with musical guest Ariana Grande.
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.
Download the TV Guide app for iPhone, iPad and Android!