C.G mix (畠山慎司 Hatakeyama Shinji) is one of the main composers of the Japanese music production I've Sound. The meaning of his name is "Communication Groove mix". C.G mix has already composed many songs for visual novel games and recently, anime theme songs for the I've Sound singers. Also a singer, he also performs songs for visual games but mostly for BL (Boy's Love) games. In 2001, he joined I've Sound and immediately became a composer and arranger of the group.