Derek Hough is still raving over the season 12 finale of America's Got Talent!
ET joined the 32-year-old dancer on his visit to the Indiana Dunes National Lakeshore in Porter, Indiana, on Tuesday, in celebration of the National Park Foundation's "Find Your Park" initiative. During our interview, he opened up about his epic surprise performance with Light Balance and how it all came to be.
"When they [producers] asked me to be a part of the finale, I was like, 'Sure, but what do you have in mind?'" he explained. "They were like, 'There's this group, Light Balance.' I was like, 'Yeah, I've seen their stuff. It's amazing, incredible.' I learned that routine in an hour, the day before."
"I was super nervous!" he confessed. "I was nervous because, once you put all the stuff on, there's this thing where your eyes -- you can't really see anything properly. And then it's dark [onstage], you're moving around in the dark."