B1A4 is a five-member male group signed with WM Entertainment. Members Jinyoung (Jung Jin Young), CNU (Shin Dong Woo), Sandeul (Lee Jung Hwan), Baro (Cha Sun Woo), and Gongchan (Gong Chan Shik) debuted in the spring of 2011. Their unique name and it’s meaning, “Be the one, all for one,” along with the group members’ personalities, quickly garnered them a solid fanbase. B1A4 has also won several awards as new artists, and in 2012 they performed in their first concert. The same year, the group began to promote in Japan.