Hatsune Miku was one of the first character personas developed by Crypton Future Media for their Vocaloid software. She debuted in 2007.

Vocaloid is an advanced voice synthesizer software. Musicians can input melodies and lyrics and the program, like a virtual signer, will perform it to produce new songs. Hatsune Miku is one the digital voices musicians can use, and to promote her, Crypton Future Media gave Hatsune Miku a profile and personality.

Her name is from the Japanese characters for fi