B1A4

K-pop quintet B1A4 ("Be the one, All for one") formed in 2011 under WM Entertainment. Performing wholesome R&B-influenced dance pop and heartfelt ballads, the members of B1A4 were discovered on Korean social media and through various singing competitions. The five idols are rapper Baro (Cha Sun-woo), leader Jinyoung Jung, Gongchan (Gong Chan-sik), Sandeul (Lee Jung-hwan), and CNU (Shin Dong-woo). Their debut EP, Let's Fly, was issued in 2011. The six-song set included the single "O.K." Months later, they followed with their second effort, It B1A4. By year's end, the group push...