Introduction to Sei
Sei (세이) is a South Korean singer. She was a member of the girl group Lady Collection. She won the 2007 Cyworld Song Festival. She made her solo debut in 2007 with the album Sei’s Diary. On April 19, 2012, she released the single 그대는 내게 좋은 사람이죠 under the stage name SAY, but changed it back to Sei one month later.
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