Live from Radio City, Week 4 Performances

Twelve talented acts take the stage to battle it out for a spot in the semifinals.
Aired: Aug 13, 2013 Genre: RealityCasts: Nick Cannon Howie Mandel Mel B Heidi Klum Howard SternCreated By: Ken WarwickDuration: 1h 25m Rating: 3 Country: United States of America Production: Syco Television