See who walked away with the grand prize following a star-studded finale on Wednesday.
For his last performance of the season, Williams brought tears to everyone's eyes with his rendition of the classic tune.
The K-pop supergroup stole the spotlight during Wednesday's 'AGT' live results show.
The 'America's Got Talent' semifinals results show airs Wednesday, Sept. 16, at 8 p.m. ET/PT on NBC.
The last batch of 'AGT' semifinals gave it their all Tuesday night to prove they have what it takes to move on to the big finale.
See which contestants moved on to the big finale and who was sent home emptyhanded.
The semifinals kicked off on Tuesday, and Williams was among the top performers of the night.
The last batch of hopefuls will find out if they are moving on or going home and ET is breaking down all the biggest moments.
ET's Kevin Frazier spoke with 'AG'T judges Howie Mandel and Sofia Vergara after the quarterfinals show.
It's been a rough season for stand-up comics on 'AGT.'
During the third live quarterfinals results show of season 15, the actress's former onscreen husband paid her a special virtual visit.
The outspoken judge had to sit out another episode while recovering from an injury he sustained earlier this month.
The former 'Modern Family' star is on DeGeneres' side.
Here are the performers and contestants who will be giving it their all once more in this season's semifinals.
