Kung Fu Fighting was released in 1974 by Carl Douglas and became a number one hit in the United States and the United Kingdom during the height of the martial arts film craze. Written by Douglas and produced by Biddu, the song sold millions worldwide and became closely linked with kung fu movies, cartoons and later family films. Its chorus has since been reused in trailers, adverts, games and countless online edits, where the short hook works as instant shorthand for retro disco confidence and tongue in cheek combat.