Swedish bubblegum dance group Smile.DK recorded "Butterfly" as their single on 2 November 1998. This pop song was written and produced by Robert Uhlmann and Robin Rex. The song gained popularity outside of Sweden when it was included on the first version of Konami's music video game "Dance Dance Revolution" and "Dance Dance Revolution 3rdMix".
This song also available on Smile.DK's studio album called "Smile". This album was released by Toshiba EMI Japan in 1998.