And Howie hits the Golden Buzzer putting Courtney straight through to the Live Shows.
Launching into Otis Redding's 'Hard to Handle', Courtney left the judges and everyone in the crowd completely speechless - jaws basically dropped everywhere.
Courtney Hadwin from County Durham may be 13, but she has blown away the judges on one of the world's biggest TV shows!
Sophie calls him "Mr. Simon".
Watch Courtney's audition below!
However, it was Howie Mandel who was really impressed by the performance.
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"Thank you so much Howie Mandel I am so happy and can't thank you enough". Before she was even done, the audience was on their feet.
Before long the golden buzzer was hit and the rest is history.
Host Tyra Bank adds: "You were absolutely wonderful".
The teen also appeared as part of the South Tyneside Festival summer concert line up in Bents Park in South Shields in July past year where she entertained more than 18,000 people.
America's Got Talent airs Tuesdays at 8/7c on NBC.
And the young talent is no stranger to the limelight of TV, having already stared in the ITV's The Voice Kids previous year.
She's not the first British act to do well in America's Got Talent, with Wimbledon ventriloquist Paul Zerdin winning the 2015 series.