Changjo

Choi Jong-hyun better known by his stage name Changjo, is a South Korean singer, songwriter and actor. He is best known as a member of the South Korean boy group Teen Top.
Career.
On July 10, 2010, Changjo made his debut as a member of Teen Top with their debut album "Come into the World" on MBC's Show! Music Core with the title track of the album "Clap". As of their debut, Teen Top has released one studio album, seven EPs and four single albums.