Hatsune Miku , officially code-named CV01, is a Vocaloid software voicebank developed by Crypton Future Media and its official anthropomorphic mascot character, a 16-year-old girl with long, turquoise twintails. Miku's personification has been marketed as a virtual idol, and has performed at live virtual concerts onstage as an animated projection.

Vocaloid is a singing voice synthesizer software product. Its signal processing part was developed through a joint research project between Yamaha Corporation and the Music Technology Group in Universitat Pompeu Fabra, Barcelona. The software was ultimately developed into the commercial product "Vocaloid" that was released in 2004.