Hatsune Miku is a music software developed by Crypton Future Media, INC., which enables anyone to make their computer sing by entering lyrics and melodies. As a massive number of users created music using the software and posted their works on the Internet, Hatsune Miku quickly evolved into a cultural phenomenon. Since then, Hatsune Miku has gained much attention as a character, involved in many fields such as merchandising and live performance as a virtual singer. Now her popularity has spread across the globe