AOA (an acronym for Ace of Angels; 에이오에이
) is a South Korean girl group signed under FNC Entertainment
. AOA consists of five members: Jimin, Yuna, Hyejeong, Seolhyun, and Chanmi. The group officially debuted with their first single album Angels' Story
, released on July 30th, 2012. On October 15th, 2016, Youkyung officially left the group. On June 30th, 2017, Choa officially left the group. In 2019 Mina left the group. The group released their first full-length album Angel's Knock
on January 2nd, 2017.