On their own, producers Rado and Choi Kyusung are responsible for some of K-pop's biggest hits: Rado with cool, minor-key jams for Beast and Trouble Maker, and Choi with glittery pop productions for T-ara and HyunA. Their collaboration as Black Eyed Pilseung draws on each producer's strengths to create irresistibly catchy tunes backed by smooth, ‘80s-inspired synths.