Related Information for Kei There are at least two bands with the name kei:1. Hayashikei (ハヤシケイ) also known as Eshinajai-KEI (絵師じゃない) better known as KEI is japanese vocaloid music producer who have created a number of works using Hatsune Miku, Megurine Luka, and VY1. KEI's most notable work is Tower; which is his first work to enter the Nico Hall of Fame. Note that he has no connections whatsoever with the illustrator KEI.He has earned the title "Le.. read more