Biography
There are multiple artists that perform under the name Jay Kay:
1.) Josef Maria Klumb, also known under the pseudonym Jay Kay, is a German musician. He became known through music projects such as Forthcoming Fire, Weissglut or Von Thronstahl.
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2.) Jason Kay, also known under his stage name Jay Kay is the lead vocalist and co-founder of English funk band Jamiroquai. Jamiroquai is often misattributed as a solo project by Kay.
Biography text from Last.fm, available under CC BY-SA.