Hopefuls audition for the judges in New York, Los Angeles and San Antonio.

Howie, Howard, Heidi and Mel B continue their quest to discover America's most talented act in San Antonio, Texas and New Orleans.

Hopefuls perform for the judges.

Auditions continue.

Auditions continue in San Antonio and Chicago.

The judges cover three cities in their epic quest to discover America's next great talent.

The last chance for performers to audition for their chance to go to Las Vegas.

Hopefuls audition for the judges in Las Vegas.

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The finalists head to Radio City Music Hall in New York City to prove that they're the rightful heirs to AGT's million-dollar prize.

After a night of amazing performances, the contestants gather to find out who's moving on to the Semifinals and who's headed home. Labrinth and Emeli Sandé perform.

The second week of live performances from Radio City Music Hall.

Four acts from the previous night's performance show will be chosen as America's favorites and move on to the semi-final round to continue their pursuit of the one million dollar prize. Labrinth and Emeli Sandé perform.

Twelve new performers take the stage to battle for a spot in the semifinals.

Twelve performers took the stage last night, but only four will make it through tonight's eliminations to move on to the semifinals.

Twelve talented acts take the stage to battle it out for a spot in the semifinals.

The votes are in and only four acts from the previous night's performance show move on to the semi-final round of competition.

It's the last night of quarterfinals! Twelve acts perform tonight, but only four will receive a pass to next week's semifinals.

Twelve performers took the stage last night, but only four will make it through tonight's eliminations to move on to the semifinals.

Welcome to the first week of semifinals! Twelve semifinalists battle it out for a spot in the finals.

Twelve performers took the stage last night, but only six can move on to the finals for a chance at AGT's $1 million prize.

The final 12 semifinalists performed last night. Tonight, only six will move on to the finals, one step closer to AGT's million-dollar prize.

Welcome to the AGT finals, live from Radio City Music Hall. Twelve talented finalists take the stage to battle it out for the million-dollar prize.

Twelve talented acts took to the stage last night, but after tonight only six will move one step closer to next week's million-dollar finale.

Welcome to the final night of performances from Radio City! The six talented finalists are ready to give it their all for one last shot at AGT's million-dollar prize. Featuring special performances from Josh Groban, Luke Bryan, Icona Pop, and Il Divo with Heather Headley.

Welcome to the AGT Season 8 finale! Six talented finalists gave it their all last night, and tonight one talented performer will be crowned the million-dollar winner.