Correct tag: 初音ミク. Please tag your songs to credit the producer, not the vocal synth as the primary artist.

Hatsune Miku (初音ミク, Hatsune Miku) is the first installment in the Vocaloid Character Vocal Series released on August 31, 2007. The name of the title and the character of the software was chosen by combining Hatsu (初, First), Ne (音, Sound), and Miku (未来, Future). The data for the voice was created by actually sampling the voice of Saki Fujita, a Japanese voice actress. Unlike general purpose speech synthesizers, the software is tuned to create J-pop songs commonly heard in anime, but it is possible to create songs from other genres. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.