Wikipedia
S.E.S. (band)
S.E.S. ( Hangul: 에스.이.에스; initialism for Sea, Eugene, Shoo) was a South Korean girl group under the management of SM Entertainment. Lasting from 1997 to 2002, they were viewed as the female version of H.O.T., another SM group who also enjoyed phenomenal popularity during the same years.
S.E.S. was K-pop's first highly successful girl group. They were challenged by groups like Fin.K.L and Baby V.O.X, which debuted soon after S.E.S. and were also successful.
Through the years, the members went through various style and image changes. S.E.S. broke up at the end of 2002, and its members have gone solo to varying degrees of success.