This animation footage is from a game called Hatsune Miku: Project Diva. Project Diva is a Japanese based game and only two languages are use, Japanese and English. If you are interested in the game, you can buy it from a range of websites though I cannot recommend any (The game is only available on PS3 or PSP). If you would like more information on the game this website is most helpful: http://miku.sega.jp/
ok… this isn’t an anime. this is a game! o.O. and who sings isn’t human… it is a vocaloid! there is a previous post of mine with the same song, just sang by another vocaloid. or is it the same with just a different video? I don’t know… I’m not the best with sound recognition.
notice how the voice is different of a human voice. and it’s what pleases me the most with this kind of work: the timbre.