Release

"Change" was officially released on January 4, 2010.
Change reached the #2 spot almost immediately after her song was released on the GAON singles chart.
The song also featured Beast's Jun Hyung

Yong Jun Hyung

Yong Jun-hyung , also known as Poppin' Dragon or Joker, is a South Korean idol, singer, rapper, songwriter and dancer. He is a member and the Main Rapper of the Korean boy group Beast.-Biography:...

 for the rap part.

Performances

Hyuna had her solo debut performances on January 8–11 with "Change" on Mnet's M! Countdown

M! Countdown

M! Countdown is a South Korean music television program broadcast by M.net. It airs live every Thursday at 6:00PM KST. The show features some of the latest and most popular artists who perform live on stage. It is hosted by Tony An and Girls' Generation's Sooyoung...

, KBS's Music Bank

Music Bank (TV series)

Music Bank is a South Korean music television program broadcast by Korean Broadcasting System, KBS. It airs live every Friday at 6:10 PM KST. It is currently hosted by guest MCs...

, MBC

Munhwa Broadcasting Corporation

Munhwa Broadcasting Corporation Munhwa Broadcasting Corporation Munhwa Broadcasting Corporation (MBC (Hangul : 문화방송주식회사, Munhwa Bangsong Jushikoesa) is one of four major national South Korean television and radio networks. Munhwa is the Korean word for "culture". Its flagship terrestrial television...

's Show! Music Core

Show! Music Core

Show! Music Core is a South Korean music television program broadcast by MBC. It airs live every Saturday at 4:20PM KST. The show features some of the latest and most popular artists who perform live on stage...

and SBS's Inkigayo.
Her "Change" promotions ended in March 2010.

Music video

On Juanuary 3, 2010, a teaser video was released online. The full music video was released on January 6, 2010.

It begins with Hyuna dancing in a dark city, she is dressed in a gray suit. Then she sits on a chair and sings, she is dressed in a black suit. The Music Video has several scenes as Hyuna dancing in a dark street wearing a pair of jeans and a black blouse, then she is dancing on
scene in a room wearing a short black skirt and a black shirt with red Calvin Kleins.

At the mid of the song, at break-dance she is dancing in the rain and at the end of the song Hyuna is dancing in front of a white background dressed in a white suit.

Controversy

On January 14, 2010, the "Change" music video was flagged with a 19+ rating due to Hyuna's provocative dancing, citing it to be inappropriate to minors. Cube Entertainment stated that the music video would be re-edited and submitted for approval. Broadcast stations SBS, however, announced the music video would be restricted for a 15+ audience instead, and MBC announced that it would still be viewable for all audiences.