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America's Got Talent has had a lot of great auditions this year, but Calysta Bevier takes the cake because she's a 16-year-old stage 3 ovarian cancer survivor and an incredible, perfect singer. Plus, she's rather endearing when she's interacting with the judges. Listen to her sing "Fight Song."

Bevier's performance sounded like a professionally produced track.

The confusingly good rendition earned a Golden Buzzer from Simon Cowell, which the judges and host Nick Cannon can only give out once. That means that Simon Cowell has a heart and Bevier will soon be a star.