S.E.S. was a South Korean girl group formed in 1997 by SM Entertainment, featuring three members: Bada, Eugene, and Shoo. Their debut album I'm Your Girl sold 650,000 copies, becoming the third best-selling album by a female group in South Korea. Their follow-up albums, Sea & Eugene & Shoo in 1998, Love in 1999 and A Letter from Greenland in 2000 also became best-sellers.

SM Entertainment Co., Ltd. is a South Korean multinational entertainment agency established in 1995 by Lee Soo-man. It is one of South Korea's largest entertainment companies and has been responsible for fostering and popularizing the careers of many K-pop stars garnering huge global fanbases. The company operates as a record label, talent agency, music production company, event management and concert production company, and music publishing house. SM Entertainment is known for having led the worldwide K-pop phenomenon and the musical side of "Hallyu", also known as the "Korean Wave", with early overseas successes such as H.O.T., S.E.S. and BoA.