Lady Antebellum and Brandy Clark Bring Their Karaoke Jam to the Big Time

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Get ready to sing along!

Lady Antebellum and Brandy Clark hit the stage on The Academy of Country Music's Superstar Duets special, bringing their go-to karaoke jam to the big time.

"[The ACMs] were asking for a duet, and we immediately said 'Islands in the Stream,'" Lady A's Charles Kelley told ET. "Hillary [Scott] and I used to karaoke that when we first got started in Nashville."

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The trio called up "Stripes" singer Brandy Clark to help them tackle the Kenny Rogers and Dolly Parton classic.

"I'm a huge fan of these guys, so it could have been the ABCs and I would have said, 'OK,'" Clark gushed. "I love 'Islands in the Stream,' too. I grew up listening to it. They were talking about it being such a huge karaoke song -- when we walk out there, honestly, and there's the teleprompter, it feels like karaoke."

But the performance would have to wait. Shortly after chatting with ET, with a hurricane rolling through Arlington, Texas, organizers were forced to delay the event by several hours. But leave it to Lady A to find the most fun way to kill time in Rangers Stadium!

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The show did go on, and you can see the full performance on Friday, May 15, on CBS. Only ET was with the stars -- including Darius Rucker and Sara Evans; The Band Perry and Deana Carter; Hunter Hayes and Brett Eldredge; Dierks Bentley, Kip Moore and Ashley Monroe; and more -- backstage at the taping. (Click here for all the exclusive video interviews.)

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