Hart Dance Team performs on America's Got Talent 2014 (VIDEO)

Hart Dance Team performs on America's Got Talent 9 Quarter Finals #2 on Tuesday, August 5, 2014.

These girls are so excitable! Especially after learning they're going to Radio City Music Hall. They eat, sleep, live, and breathe dance, and their act is one of the more unique dance-related routines in the competition. They use props, sets, costumes and modern music to create a fully-involved experience. I dug this.

Mel B thought it was a stunning performance, while Howie talks about how inspiring this show is. He says people at home are going to want to do what they do. However, Howard was less impressed, calling it a "flat" performance, and arguing that they need to differentiate themselves more if they advance. Heidi somewhat agrees with Howard, saying she was hoping for something more original that didn't feel like a retread.

Watch the performance video here: