The seventeenth episode of Season 16, and the three hundred and eighty-third episode of America's Got Talent overall, was aired on September 7, 2021. It was the second of two Semifinals performance episodes and took place at the Dolby Theatre. 11 acts performed for 5 spots in the Finals.
Performed
| Symbol | Meaning |
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Standing Ovation |
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Buzzer |
| Name | Image | Act | Howie | Heidi | Sofia | Simon |
|---|---|---|---|---|---|---|
| 1. 1aChord | 
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Vocal Trio |
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| 2. UniCircle Flow | 
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Unicycle Group |
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| 3. Léa Kyle | 
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Quick-Change Artist |
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| 4. Kabir Singh | 
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Stand-Up Comedian |
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| 5. Northwell Health Nurse Choir | 
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Choir |
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| 6. Peter Antoniou | 
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Mentalist |
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| 7. Victory Brinker | 
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Opera Singer |
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| 8. Chapkidz | 
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Dance Group |
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| 9. Rialcris | 
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Acrobatic Trio |
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| 10. Josh Blue | 
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Stand-Up Comedian |
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| 11. Brooke Simpson | 
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Singer |
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Trivia
This episode has the most amount of buzzes in a semifinal episode since Episode 627.
This episode has the most amount of acts buzzed in a live show since Episode 722.
This episode currently holds the most amount of acts buzzed by Simon Cowell in a live show episode with 3.
Videos
1aChord Sings an INCREDIBLE Cover of "Every Breath You Take" - America's Got Talent 2021
1aChord
UniCircle Flow Delivers a STUNNING Performance to "Physical" by Dua Lipa - America's Got Talent 2021
UniCircle Flow
Léa Kyle Performs DAZZLING Quick-Change - America's Got Talent 2021
Léa Kyle
Kabir Singh Describes HILARIOUS Moments From His Dating Life - America's Got Talent 2021
Kabir Singh
Northwell Health Nurse Choir Will INSPIRE You With "Don't Give Up On Me" - America's Got Talent 2021
Northwell Health Nurse Choir
Peter Antoniou Turns Terry Crews Into a PSYCHIC! - America's Got Talent 2021
Peter Antoniou
9-Year-Old Victory Brinker Sings a BEAUTIFUL Rendition of "Nessun Dorma" - America's Got Talent 2021
Victory Brinker
UNBELIEVABLE Dance Crew Chapkidz Performs to "Gasolina" and "Con Calma" - America's Got Talent 2021
Chapkidz
Rialcris Performs an AWESOME Hand-Balancing Act - America's Got Talent 2021
Rialcris
Josh Blue Tells FUNNY Stories About Competing at The Paralympics - America's Got Talent 2021
Josh Blue
Brooke Simpson Sings a POWERFUL Cover of "Bad Habits" by Ed Sheeran - America's Got Talent 2021
Brooke Simpson
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