B1A4

B1A4 is a South Korean boy band formed by WM Entertainment in 2011. The group originally consisted of five members: Jinyoung, CNU, Sandeul, Baro, and Gongchan. B1A4 made their debut with the EP "Let's Fly," which included the hit single "O.K." The band quickly gained popularity for their catchy music and charming personalities. Over the years, B1A4 has released several albums and extended plays that have contributed to their success both domestically and internationally. They are known for their self-produced music, particularly with member Jinyoung taking an active role in composing and producing tracks. The group has also been involved in various solo activities, including acting and hosting, further expanding their presence in the entertainment industry. CNU, Sandeul, and Gongchan have continued as a trio under WM Entertainment.