The contestant sang an original song, called "Try," after explaining to the judges that she has been deaf for over ten years.
Could you just imagine being able to sing, and sing well, while being deaf?!
Mandy uses muscle memorisation and feeling the vibration of the music with her feet, as well as trusting her pitch, to produce the most beautiful sound we've ever heard.
Bringing the audience to tears, Simon Cowell used his golden buzzer to send her straight to the live shows, calling the audition "one of the most amazing things I have ever seen and heard."
Watch it below, and be blown the hell away.