The Ndlovu Youth Choir have been wowing American audiences on the hit reality TV show since their audition and are going to the semi-finals.
Performing an African arrangement of U2's "Beautiful Day" on Tuesday, the Limpopo-based choir received a standing ovation from both the judges and audience.
Simon Cowell was the first judge to give his comments and said that they "popped" and applauded them for their "enthusiasm" and "great song choice".
Praising them for making everything work and click.
Howie Mandel equated their performance to when opening curtains in the morning and letting the sun shine in and said that they were the best way to end the evening.