Kim Hyun-ah, better known by Hyuna, is a South Korean singer-songwriter, rapper and model. She debuted as a member of the girl group Wonder Girls in February 2007. After leaving the ensemble shortly after, Hyuna subsequently left JYP Entertainment and joined the girl group 4Minute, under Cube Entertainment. 4Minute debuted in June 2009 and went on to become one of the most popular girl groups in the country.