Keiko Utoku is a Japanese pop/rock artist. She first got recognized as a member of the well known trio, Mi-Ke, until their split in early 1994. After the split of Mi-Ke, Utoku went on to become a rather successful solo artist. Unlike the worldly range of Mi-Ke, Utoku's solo material tends to follow a more laid-back, pop-rock style. Aside from her solo career, she is also known for providing music for the highly successful 1993 video game, Sonic CD.