Five-year-old Sophie Fatu hit the stage for her audition - and totally won over the judges and audience members!
Judge Howie Mandel added.
The teen performed a high-octane version of Otis Redding's Hard to Handle - seemingly totally at odds with her shy demeanour just moments before. Channeling her inner Janis Joplin, the young singer delivered a memorable performance that left a huge impression on the judges, especially Simon Cowell.
"Bloody hell, Courtney. You're like this shy little thing when you first came out". Then you sing and you're like a lion.
"Genuinely incredible", said Simon.
"You are not from this era". Watch the video to see her awesome performance.
AGT•NBCAmerica's Got Talent The audience were visibly shocked when Courtney started singing
She first went viral when a video of her singing at her school lunchtime open mic session got loads of views on YouTube. I am not Clive Davis, I am Howie Mandel and I can't sign you to a record deal.
What can you say about Courtney Hadwin's performance? "The only thing I can do for you young lady is give you", Mandel explained before hitting the Golden Buzzer.
Courtney said getting the golden buzzer was more than she "could have dreamed".
Courtney is no stranger to talent shows - she also competed in The Voice Kids in 2017 and was mentored by McFly and McBusted star Danny Jones.
Robbie Williams to open World Cup despite Party Like A Russian track
However, the spending tally provided by Russia's World Cup organizers falls short of the amount spent by Brazil to host the 2014 World Cup.