The Games, which are being held in South Korean city PyeongChang, used an extended K-pop medley to soundtrack the entrance of some of the Olympic teams.
The USA delegation were the lucky ones who got to walk into the stadium while Psy was blasted out.
Other K-pop groups like Twice, BTS, Bigbang and Red Velvet also had songs chosen for the Parade of Nations during the opening ceremony on Friday.
The USA team was led by luger Erin Hamlin while Vice President Mike Pence watched in the crowd.
The ceremony also featured a group of South Korean singers singing a cover of John Lennon’s ‘Imagine’.
Ha Hyun-woo from indie rock band Guckkasten, Bolbbalgan4’s Ahn Ji-young, singer Lee Eun-mi and Deulgukhwa’s Jeon In-Kwon performed a touching cover of the 1971 song.
The singers held hands while they were surrounded by spectators holding candles.