Hatsune Miku , officially code-named CV01, is a Vocaloid voicebank and software application developed by Crypton Future Media. Her voice is generated using vocal sound samples provided by Japanese voice actress Saki Fujita. The software is personified by an official mascot character depicted as a 16-year-old girl with turquoise twintails. Marketed as a virtual idol, Miku has performed at live virtual concerts as an animated projection.