𝗕𝗶𝗼𝗴𝗿𝗮𝗽𝗵𝘆 a-four-man band consists of vocalist Yeongjoo, drummer Yeontae, guitarist Seungwon, and bassist Jaehyun. 3 engineering student + taekwondo instructor They debuted at 14-08-2018 with their first single 《Hymn of the birds》 The band's name came from a site called bandnamemaker, Seungwon send it to the chatroom and that was how it decided. In 2018, they won the Emergenza world band festival and made it to Taubertal festival in Germany