Crystal Kay Williams (born February 26, 1986 in Yokohama, Japan) is a R&B and pop singer, songwriter and model. She mainly uses her first two names Crystal Kay as her stage name, although she is known by many fans as "Kuri." Crystal Kay is under the Sony Music Entertainment Japan records label. Biography Crystal Kay was born to an African American father (a bassist from New Jersey) and a third-generation Zainichi (person of immigrants descendant - in her case, Korean - born in Japan) mother who was a professional singer. Growing up with musicians as parents influenced Crystal to launch a musical career of her own, which she accomplished with her debut at age 13. Prior to this, she provided voiceover work for a television commercial at the age of six. Crystal Kay was born and raised in Japan but she attended Kinnick High School when her father was stationed in Yokosuka. She now attends Sophia University, which is the s