Andy Lee is best known as a rapper in the Korean band Shinhwa. He is the youngest of the group. Besides rapping for his band, Andy has ventured out to be an actor as well, getting successful roles in many banjun dramas, as well as popularity. On November 30, 2007, Andy released his very first digital single, titled "Irrelevant [or Extraordinary] Imagination". He is the 5th member in Shinhwa to go solo. "Irrelevant Imagination" is a remake from the group Rollercoaster's song. Due to the help of Park Jin Young (also known as JYP; CEO of JYP Entertainment) and Yoobin of Wonder Girls, Andy was able to have a successful single. Yoobin rapped while JYP wrote the lyrics for the rap part in the song. Together, they helped Andy attract a lot of attention for his new single.
--wikipedia