Hatsune Miku

Hatsune Miku is a singing voice synthesizer software product developed and published by Crypton Future Media, as well as a character for the same software.

Overview
First released in August 31 2007, Hatsune Miku uses Yamaha Corporation's VOCALOID 2 singing voice synthersizer technology, and her voice is sampled from Saki Fujita, a Japanese voice actress.

Character-wise, Hatsune Miku is depicted as a 16 years old girl with long blue-green twin tails. KEI designed the character and drew the art for the first version of the software package.

Relations with Black★Rock Shooter
Songwriter ryo composed a song using Hatsune Miku's software for huke's eponymous character. As a character, Miku is also depicted singing the song in several Hatsune Miku: Project DIVA rhythm games by SEGA, including Hatsune Miku: Project DIVA f (PlayStation Vita), Hatsune Miku: Project DIVA F (PlayStation 3), and Hatsune Miku: Project DIVA Future Tone (PlayStation 4).

Despite some resemblance on their outward appearances, Black★Rock Shooter is not a variation of Hatsune Miku; the two are separate characters. Piapro, a content posting website run by Crypton Future Media, posted a statement on their official blog to clarify that huke's character is not a product of their company. Furthermore, in response to a comment asking if the two are of the same character, huke estimated Black★Rock Shooter to be around 15 years old, which is one year younger than the Vocaloid character.