South Korea's Supreme Court has rejected a US composer's allegation that the producers of the inescapably catchy children's song Baby Shark plagiarised his work, ending a six-year-long legal battle.

A copyright battle over the viral song “Baby Shark,” adored by young children and often dreaded by their parents, has come to an end with a court clearing the Korean creators of the most popular version of plagiarism.

The judges found “Baby Shark” was based on a nursery rhyme, dismissing the six-year case of U.S. entertainer Johnny Only that centered on his 2011 version.