Hundreds of students gathered to watch others ride invisible horses as part of a Gangnam Style flash mob Monday afternoon in the Pit.
The Korean American Student Association created the event featuring Gangnam Style, a K-pop music video by Korean rapper PSY that went viral after its July 15 release.
While more than 850 students joined the Facebook event, only a fraction of those students performed the dance.
But hundreds watched the Pit fill up as the song progressed and the number of students dancing grew from just a few to several dozen.
No one anticipated the number of people who joined the Facebook event to grow so quickly, said Matt Lee, vice president of the Korean American Student Association.
“I was expecting like 100 students,” he said. “There were students from N.C. State and Duke that joined the event.”
Many of the attendees were not Asian.
“It’s awesome that (the music video) reached out to other races,” Lee said.
“Gangnam Style” is the first significant Korean music crossover to make an impact in the U.S.