9MUSES A was the first sub-group of South Korean girl group 9MUSES formed by Star Empire Entertainment in 2016. It was composed of four 9MUSES members: GyeongRee, Hyemi, Gabin and Keumjo. The group released their debut single album Muses Diary on August 4, 2016. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.