Roller Coaster is a song by South Korean singer Chung Ha, released as the lead single from her EP Offset in 2018 after her time in the project group I.O.I. Its bright dance-pop sound helped establish her as a solo artist, and short chorus clips have since circulated widely in fan edits and social videos. The hook works well on its own because it is instantly recognisable to K-pop listeners, keeping the track in rotation for dance challenges, compilations and upbeat edits long after its original release.