The trademarks of Hatsune Miku are her two blue-green ponytails, and her futuristic outfit resembling a school uniform.

The Hatsune Miku voice synthesizer software was developed based on the voice of Japanese voice actress Saki Fujita, and first released on August 31st, 2007. Since her release, Hatsune Miku has evolved into a phenomenon of highly participatory cyber culture, with Miku-related content created and shared everyday around the globe. At present, Hatsune Miku is not only the icon of this ever expanding creative community, but she is also the main performer of sold-out 3D concerts worldwide, even appearing in TV commercials such as for Toyota USA and Google, and on US national TV’s Late Show with David Letterman.