Rebecca Black hit the stage of an unlikely reality show to perform on last night: “America’s Got Talent.”

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Black did a mashup of her new single "My Moment" and infamous hit "Friday" on Wednesday night's episode -- and she actually sang both live, while "dancing" with backup dancers.

The 14-year-old recently withdrew from her school in Anaheim Hills, CA to be homeschooled by her mother after constant teasing from her classmates.

"When I walk by they'll start singing 'Friday' in a really nasally voice," she told ABC News. "Or, you know, they'll be like, 'Oh hey, Rebecca, guess what day it is?'"

Check out the performance above.