'AGT': AI opera-makers Metaphysic vie for spot in finale: 'God only knows what you’re going to do next'

"America's Got Talent" conveyed an adrenaline-siphoning live outcomes show 

Makes a decision about Simon Cowell, Sofía Vergara, Heidi Klum and Howie Mandel 

the ups and downs of Tuesday night's live exhibitions

"That was a rollercoaster," expressed Mandel of the live exhibitions. 

We had a few plunges, a few genuine dissatisfactions 

 the previous evening, however a few invigorating shocks."

The challengers who've proactively come to the finals incorporate nation groups