We did not see that coming! You won't believe the performance from this eccentric teenager. Courtney earns Howie Mandel's Golden Buzzer sending her straight to the live shows. » Get The America's Got Talent App: http://bit.ly/AGTAppDownload » Subscribe for More: http://bit.ly/AGTSub » America's Got Talent Tuesdays 8/7c on NBC! » Stream on Peacock: https://pck.tv/3cCQGhH AMERICA'S GOT TALENT ON SO