Girl group AOA came back with the song, 'Short hair.' 'Short hair' is about a woman who went through a breakup and cut her hair to change her feelings. Brave Brothers produced the song.

On Mnet's M!Countdown, leader Jimin said that this was the group's first mini album and lots of songs were on it. "This is Seolhyun's comeback after six months, so she is very nervous. She lost a lot of weight and prepared hard, so please watch us."

Early this year, AOA won first place on the music program with their song, "Mini Skirt.' Jimin said, "Many people still like our song mini skirt, but I hope they will listen to 'Short Hair' more now. We will work hard to make everyone like our new song."

AOA showed their main choreography for the song. One was the 'some' dance and the other was 'yakongkong' dance. They both showed AOA's cuteness.

Lastly Jimin said, "We will always work hard, so please love us and watch us."

AOA will return as their full seven-member team and work actively with their new song 'Short Hair.'