A.KOR (에이코어) is a South Korean five member girl group under Doo Republic. The group consists of Kemy, Minjoo, Jiyoung, Taehee and Daya. Their name stands for "Top of Korea". The girls first released single "Payday" at July 25th, 2014 as a trio consisting of Kemy, Minjoo and Jiyoung. However, it was said it should not be taken as their official debut. Their official debut single "But Go" was released on September 5th, 2014.