Kim Hyun-ah (born June 6, 1992), better known by the mononym Hyuna , (stylized as HyunA ) is a South Korean singer, dancer, songwriter and model. She rose to fame in the late 2000s as a member of the girl group Wonder Girls . After leaving the ensemble shortly after their debut in 2007, she subsequently joined the girl group 4Minute in 2009.  Hyuna began a solo career in 2010, with a style she described as "performance-oriented music".  Her debut single "Change" peaked at number two on the Gaon Digital Chart .