What's Happening? is the fourth mini-album recorded by the South Korean boy band B1A4, which was released by WM Entertainment on May 6, 2013. The track "What's Happening?" was used as the lead single

B1A4 is a South Korean boy band formed by WM Entertainment. The group debuted on April 23, 2011, with the single "O.K" from the EP Let's Fly, after being introduced to the public through a webtoon. Th