The INSIDER Summary:
- Finalist Mandy Harvey hit the stage Wednesday night to sing a moving duet with Shania Twain of the country singer's hit song "You're Still the One" for the season 12 finale of "America's Got Talent."
- Harvey, a 29-year-old deaf singer, earned a Golden Buzzer from judge Simon Cowell after her first performance.
- She revealed then that she had been deaf since she was 10, but used vibrations to keep the beat.
- She finished in fourth place on the NBC talent competition.
- Watch the performance below.
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