Crystal Kay (born February 26, 1986), is a Japanese singer and songwriter from Yokohama, Japan. After releasing her debut single "Eternal Memories" (1999) Kay gained fame for her third studio album, "almost seventeen" (2002), which debuted at number-two on the Japanese Oricon charts. "almost seventeen" eventually sold over 400,000 copies and was certified platinum by the Recording Industry Association of Japan.

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