As his performance came to a close, Goodall was saluted with a standing ovation from the entire room, including the four judges.
The 55-year-old fan-favorite singer is one of six contestants moving forward to next week's finals.
“You’re 10 years old, but you have the talent of someone who’s been performing for decades,” Howie Mandel told the young singer.
"Dee Dee, I think you’ve got a real shot at winning this competition," Simon Cowell told the Oakland nurse.
"This is what this show is all about—finding acts like this that are truly world-class," Simon Cowell said.
"If this was the Olympics for singing, you would have won the gold medal," Simon Cowell said.
"That stage is where dreams come true. Do you believe in dreams?"
Young singer Pranysqa Mishra named Tina Turner, Aretha Franklin, and Whitney Houston as her musical inspirations.
The 20-plus dancers, dressed all in white, powered their way through multiple, seamless routines.
Putri Ariani led all singers in the 18th season of "AGT."
