HyunA's powerful charisma is on full display in her solo work. In 2010, one year after her debut as the rapper of rave-pop girl group 4Minute, she released her first single, “Change,” showing a tougher hip-hop side. She's since proven herself as not only a confident MC, but a true pop star. “Bubble Pop!” is pure sugary bliss, carried by an infectious, cooed hook, while on “Red,” she fills both singer and rapper roles, delivering swaggering verses and a victorious chorus over big beats that fuse hip-hop and EDM.