The results from last nights performances will be announced tonight live. 12 acts performed last night live on stage at Radio Music City Hall in New York City. Tonight Nick Cannon will reveal the 4 performances that garnered the most votes from the home audience. Also tonight a majority vote from the 4 judges will decided the 5th and final act to move on to the semifinals. Tonight's special guest performer will be Lindsey Stirling who is a composer, dancer and violinist and who appeared on AGT in 2010.
Episode number: 9x13 Production Number: 913 Airdate: Wednesday August 06th, 2014 Special Airtime: 09:00 pm Special Runtime: 60 Minutes