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Robin Thicke during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0346.JPG )

Robin Thicke during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0371.JPG )

Robin Thicke during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0497.JPG )

(l-r) Innovative Force, Struck Boyz and Aquanuts during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0905.JPG )

Innovative Force during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0906.JPG )

Innovative Force and Nick Cannon during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0907.JPG )

(l-r) Howard Stern, Heidi Klum, Mel B and Howie Mandel during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0515.JPG )

(l-r) Brad Byers, Kid The Wiz and Dave Shirley during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0908.JPG )

(l-r) Nick Cannon, Brad Byers, Kid The Wiz and Dave Shirley during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0909.JPG )

(l-r) Brad Byers, Nick Cannon, Kid The Wiz and Dave Shirley during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0910.JPG )

Brad Paisley during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0196.JPG )

Brad Paisley during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0198.JPG )

Brad Paisley and Howie Mandel during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0211.JPG )

(l-r) Howard Stern, Mel B, Brad Paisley, Howie Mandel and Heidi Klum during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0003.JPG )

(l-r) Marty Brown, Nick Cannon and Alexandr Magala during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0902.JPG )

(l-r) Marty Brown, Alexndr Magala and Ciana Pelekai during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0911.JPG )

(l-r) Marty Brown, Nick Cannon and Alexandr Magala during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0912.JPG )

Howard Stern during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0112.JPG )

Howard Stern during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0107.JPG )

(l-r) Forte, Angela Hoover and Tone The Chiefrocca during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0913.JPG )

Forte during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0914.JPG )

Howard Stern, Heidi Klum and Mel B. during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0306.JPG )

(l-r) Angela Hoover and Tone The Chiefrocca during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0915.JPG )

(l-r) Angela Hoover, Nick Cannon and Tone The Chiefrocca during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0903.JPG )

Angela Hoover and Nick Cannon during 'America's Got Talent' at Radio City Music Hall in New York on Wednesday, July 31, 2013. (Virginia Sherwood/NBC) ( NUP_157362_0904.JPG )