015B (공일오비) is a male producer duo under their own label, THE105B. They originally debuted in 1990 as a four-member band.
Following the release of their sixth album, The Sixth Sense - Farewell to the World, 015B disbanded to focus on solo activities in 1996. However in 2006, 015B reformed as a duo consisting of the two brothers.
|Jang Ho Il (장호일)||1990–1996, 2006–present|
|Jung Suk Won (정석원)||1990–1996, 2006–present|
|Cho Hyung Gon (조형곤)||1990–1996|
|Cho Hyun Chan (조현찬)||1990–1996|