Prior to singing, all Hadwin could say was that she was "nervous", but Mel B assured her she would be fine.
This wasn't Courtney's first time performing on television.
'You were this shy little thing when you came out.
Howie was so impressed by Courtney's performance that he said she was beyond this "era" - and compared her to an iconic singer! "And then you sing, and you're like a lion", Cowell marveled.
Fury fails to impress as farcical return says little about his condition
Germany's Manuel Charr, who holds the secondary WBA title, is one potential opponent for Fury in the next six months. The Gypsy King defeated Sefer Seferi on his long-awaited return to the ring at Manchester Arena on Saturday night.
For the rest of the song the audience are on their feet, as she belts out the 1968 song - and the performance finishes with a standing ovation from everyone in the auditorium.
"Genuinely incredible", said Simon. "Oh my gosh! You are not from this era".
"Thank you so much Howie Mandel I am so happy and can't thank you enough". Clyde Davis, he, goes to the Monterey Pop Festival and he sees this young girl that nobody has ever seen before and that nobody knows. "I'm not Clive Davis".
Courtney said getting the golden buzzer was more than she "could have dreamed".
Rodman weeps as Trump and Kim meet
The pledge, absent from the joint statement Trump signed with Kim, appeared to come as news to both South Korea and the Pentagon. However, he said, every time he has met Mr Kim, it has been a surprise, so maybe he would be surprised again on Tuesday.
So who is she and how did this all happen? "The only thing I can do for you young lady is give you this".
Before hitting the "America's Got Talent" stage, Hadwin previously competed on "The Voice Kids UK", where she made it to the final rounds of competition.
Kate Middleton perfected summer style in a $70 Zara dress
Savannah drew attention at Trooping the Colour after putting her hand over little George's mouth as he sang the National Anthem. It seems that the source of the families laughter Sunday came from no other than Princess Charlotte .