America's Got Talent contestant Avalon Penrose, who introduced herself as someone who sang opera in her childhood, brought chaos — and fun — to the stage. "I was a childhood opera singer. And then I ...

Since its launch in 2007, the show has introduced the nation to opera singers, street dancers, magicians, comedians and even a dancing dog or two.

Tuesday's episode was the last of the auditions for season 20. America's Got Talent contestant Avalon Penrose, who introduced herself as someone who sang opera in her childhood, brought chaos — and ...