Hatsune Miku
, sometimes referred to as Miku Hatsune, is the name of a Vocaloid software voicebank developed by Crypton Future Media and its official moe anthropomorph, a 16-year-old girl with long, turquoise twintails. She uses Yamaha Corporation's Vocaloid 2, Vocaloid 3, and Vocaloid 4 singing synthesizing technologies. She also uses Crypton Future Media's Piapro Studio, a singing synthesizer VSTi Plugin. She was the second Vocaloid sold using the Vocaloid 2 engine and the first Japanese Vocaloid to use the Japanese version of the Vocaloid 2 engine. Her voice is modeled from Japanese voice actress Saki Fujita. Miku's personification has been marketed as a virtual idol and has performed at concerts onstage as an animated projection (rear cast projection on a specially coated glass screen).
Vocaloid 2
VY2 was the second addition to the "VY" series, after VY1 and was designed to compliment the VY1 voice, its codename is "Yūma". The voice of VY2 is masculine and sings in Japanese. It was released on April 25, 2011. VY1 it also was designed to be unbound by having no set avatar allowing it to take any appearance, sex or age. Effort was made to disassociate VY2 with anything personal, bares a sword on the boxart because they felt items such as clothing would be too personal but chose its codename to help direct producers to the direction the voice was heading for of a handsome young male. A producer working with the VY2 found when he wrote a song that VY2 was the only male Japanese vocal that could produce a quality of vocal good enough for the song and he labelled the vocal as the best Japanese male. When producing this vocal, the developers had compare it also with other masculine vocals within the series (excluding Ryuto and Kagamine Len, both of which are voiced by female vocalists), with only the Gackpoid software coming close to VY2.