Super Junior is a South Korean boy band which was formed in 2005 by the label SM Entertainment. They debuted under the name Super Junior 05 and was originally meant to be a band with rotational line-ups. Originally consist of twelve members; Leeteuk, Heechul, Han Geng, Yesung, Kangin, Shindong, Siwon, Sungmin, Eunhyuk, Donghae, Kibum and Ryeowook, the band changed its name permanently to Super Junior after the addition of final member Kyuhyun in 2006. As a large band, they uses the concept "separately and together" in their musical activities by forming subgroups which focuses on different genres; Super Junior-K.R.Y. which focuses on Korean ballad in 2006, Super Junior-T in 2007, Super Junior-Happy in 2008, Super Junior-M with two unit-exclusive members Henry and Zhou Mi in 2008, and Super