Kim Hyun Ah (Hangul: 김현아; Hanja: 金泫雅), born June 6, 1992, better known by the mononym HyunA (현아), is a dance-pop/hip-hop artist from Seoul, South Korea. Though popularly known as the main rapper and dancer of the girl group 4minute in 2009, she made her debut as a member of Wonder Girls in 2007 before leaving for health reasons. Hyuna made her solo debut on January 4, 2010 with Change (feat. 용준형 from Beast). She followed up with Bubble Pop! on July 5, 2011. The same year, she became one half of the award-winning co-ed sub-unit, Trouble Maker, on December 1, 2011. Subsequent follow-up solo singles such as Ice Cream (feat. Maboos) released on October 21, 2012 became her first official number one single hitting the top spot on Gaon's Weekly Digital Chart, Korea's national chart. She followed up with 빨개요 on July 27, 2014.
In 2007, when she was 14, Hyun Ah debuted in the girl group Wonder Girls under the JYP Entertainment label, staying with the group for the release of their debut EP, "The Wonder Begins". She left before the release of their second single, "Tell Me", due to health reasons. Two years later, she began being featured on other artists' songs and was eventually transferred to JYP's sister label Cube Entertainment. In May 2009, Hyun Ah's re-debut in the girl group 4minute was announced, with the release of their debut single, "Hot Issue", in June 2009.
In addition to her roles in Wonder Girls and 4minute, Hyun Ah took part in the project group 4Tomorrow, along with After School's UEE, KARA's Seungyeon and Brown Eyed Girls' Ga-in.
In 2011, she released her first mini-album, Bubble Pop!, with the title track of the same name.
Hyun Ah graduated from Korea High School of Music and Arts and currently attends Konkuk University. She cites Beyoncé, The Pussycat Dolls, Rain, and BoA as her favorite musicians and influences.