About CN Blue CN Blue (Korean: 씨엔블루 Japanese: シーエヌブルー ), stylized as CNBLUE, are a South Korean rock band formed in Seoul in 2009. The band consists of Jung Yong Hwa (lead vocals, rhythm guitar), Lee Jong Hyun (lead guitar, vocals), Lee Jung Shin (bass guitar, vocals) and Kang Min Hyuk (drums, vocals). "CN is an abbreviation of ‘Code Name’ while BLUE is an abbreviation of the members’ individual images," said by one of the members.