bigger and brighter than ever! ET will be following along throughout the hour-long episode to break down all the best, biggest and most surprising moments.Simon Cowell, Howie Mandel, Sofia Vergara and Heidi Klum will judge and vote on a whole new slate of hopefuls, who are risking life and limb for a shot at moving on to the next round of competition or maybe earning the coveted Golden Buzzer.Last week, Cowell awarded his Golden Buzzer to an inspiring young singer, who goes by the stage name Nightbirde, who floored the outspoken judge with a breathtaking original tune and a powerful story about her battle with cancer and her refusal to let it define her.Tonight, the fun kicks off later than usual at 10 p.m.
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