A South Korean boy group initiated by Beat Interactive, A.C.E emerged in 2017 with a sound that infused the soulful and effusive dance-pop of BTS with elements of hardstyle and rock. Comprised of leader Jun, Donghun, Wow, Kim Byeongkwan, and Chan, the group issued their debut single, "Cactus," and follow-up "Callin'" shortly after forming. Both cuts appeared on the quintet's 2018 debut EP, Adventures in Wonderland. That same year saw A.C.E feature on the DJ Hcue single "Feel So Lucky." A sophomore EP, Under Cover, followed in May 2019, with a third mini-album, Under Cover: The Mad Squad, arriving later that October. ~ James Christopher Monger