is a song by South Korean boy band Super Junior featuring their labelmate girl group f(x).
The track is released as part of Super Junior's repackaged version of their fifth studio album, Mr.
The lyrics of the song are written by Misfit and Super Junior members Eunhyuk, Donghae, Shindong, Leeteuk and Heechul, which are also the ones who wrote the rap verses.
[3] The song was first performed in the KBS music program You Hee-yeol's Sketchbook on September 30, 2011 together with Girls' Generation member Tiffany.
[4] The song was also performed during the Super Show 4 Tour on November 19 and 20 with f(x) members Amber, Victoria and Sulli.