"Ko Ko Bop" is a song recorded by South Korean boy band EXO for their fourth studio album The War. It was released in Korean and Chinese versions by S.M. Entertainment on July 18, 2017.
Produced by Styalz Fuego, "Ko Ko Bop" is described as an energetic reggae song with rhythmical reggae and bass guitar sounds. "Ko Ko Bop" was co-written by EXO members Chen, Chanyeol and Baekhyun. It was digitally released on July 18, 2017 and physically on July 19 along with the album. According to Chanyeol, the term "Ko Ko Bop" means "Fun Dancing"