Deaf Singer Mandy Harvey Performs Original Song, Even Simon Cowell Was Impressed

Deaf singer Mandy Harvey performed Tuesday night during the Quarterfinals 2 episode of "America's Got Talent" 2017.

Since Harvey earned Simon Cowell's Golden Buzzer back in the early audition rounds, America hasn't seen her perform in two and a half months. Did Harvey improve on her second "AGT" performance?