Yesung, (born on August 24, 1984), his birth name is Kim Jongwoon. The soulful voice of Super Junior. He auditioned in the Starlight Casting system and was recruited under SM Entertainment.
In September 2006, he had been a DJ for his own radio show where SuJu members frequently appeared as guests. He had to end his show eventually so he could concentrate on his singing career. The last air date was on September 8, 2007. He was also involved with sub-units Suju- K.R.Y and Suju-Happy.