Dance Group 'Light Balance' Returns to 'America's Got Talent' With Another Unbelievable Light Dance Performance

In this clip from Tuesday night's quarter finals episode of America's Got Talent 2017, Ukrainian light dance group "Light Balance" returns to the AGT stage with a dazzling but spooky dance routine to Jason Derulo's "Swalla" and "If It Ain't Love." (watch their previous performance).