The epic moment went down onstage during day 3 of the 2015 Big Barrel Country Music Festival on Sunday, June 28 in Dover, Del. She wowed the crowd with an amazing mash-up of her song "See You Again" and Wiz's song with the same title.
"Thanks to all who came out to the @BigBarrelFest! You were such an amazing crowd! I'm so happy there's no way I'm gonna to sleep tonight!" Carrie tweeted after her performance.
Watch her sing the epic "See You Again" mashup below.
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Gallery | Carrie Underwood Hits the Stage