B1A4 is a dynamic K-pop group originally formed by WM Entertainment, consisting of leader Jinyoung, CNU, Sandeul, Baro, and Gongchan. The group's name, meaning "Be the one, all for one," symbolizes their unity despite different blood types. Known for their catchy music and innovative concepts, B1A4 made their debut in 2011 with the mini album "Let's Fly." Hits like "Beautiful Target" and "What's Happening" showcased their unique sound, largely crafted by Jinyoung. In 2018, Jinyoung and Baro chose to move on to pursue acting careers, leading to a shift in the group's lineup. Despite this change, B1A4 continues to captivate fans with their talent and charisma.