Valo & Bobby perform Balancing Act on America's Got Talent 2014 (VIDEO)

Valo & Bobby performed a Balancing Act on America's Got Talent 9 Quarter Finals #1 on Tuesday, July 29, 2014.

The performance was held live at Radio City Music Hall in New York City.

The judges couldn't stress enough how dangerous this act was.

"I don't know how this translates back home," said judge Howie Mandel. "The danger factor is absolutely huge. I'm so happy you survived. You deserve a vote for survival."

"It was awful," said judge Mel B. "It was frighteningly awful. It was awful in a good way."

"Go big or go home," said Heidi Klum. "And you went big. I was super scared."

"The point of this whole act... and you guys know how to fill up a stage. It was so spectacular to see in person," said Howard Stern. "This is a fabulous act."

The results of the Quarter Finals #1 will be revealed on Wednesday, July 30, 2014.

Watch the performance video here: