No Brain (노브레인) is a South Korean rock band of four formed in 1997. Performing actively at a live club "Drug" in Hongdae district of Seoul, it released first single Cheong-choon 98(청춘 98) in 1999. Since its debut, it has drawn critical acclaim that it preserved existing punk style and created a new style of "Chosun (a former dynasty of Korea) punk" concurrently. Especially, vocalist Sungwoo Lee's unique voice that captivates an audience plays a key role which completes No Brain's characteristic punk rock music.