1st and Forem0st.... B1A4

B1A4 (Korean: 비원에이포) is a five member South Korean boy band founded by WM Entertainment in 2011. The band consists of Jinyoung (leader), Baro (Sunwoo), Sandeul (Junghwan), CNU (Shin Dongwoo),and Gongchan (Gong Chansik, maknae/youngest). They were introduced in a webtoon^[1] and mix pop with rock for their debut album^{[citation needed]}.
Their group name, B1A4, has been explained as being due to one member having B blood type, and the other four having A blood type. It also stands for "Be The One, All For One".^[2][3] B1A4 have been dubbed "countryside-dols" by Korean media, because all the members originate from the Korean countryside.^[4] Jinyoung and Shinwoo are from Cheongju, Chungcheongbuk-do; Sandeul is from Busan, Baro is from Kwangju, Jeollanam-do; Gongchan is from Suncheon, Jeollanam-do