In July 2011 After School (애프터스쿨) was divided into two sub-groups, After School Red (애프터스쿨 레드) and After School Blue (애프터스쿨 블루). Both groups released a single and promoted their own songs at the same time. While A.S. BLUE features an innocent concept, A.S. RED features a sexy and powerful concept. Both groups' debut singles were released as After School 4th single. Members: • Kahi (가희) • Jung Ah (정아) • UEE (유이) • Nana (나나) <a href="https://www.last.fm/music/%EC%95%A0%ED%94%84%ED%84%B0%EC%8A%A4%EC%BF%A8+%EB%A0%88%EB%93%9C">Read more on Last.fm</a>. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.