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).
Kimi no Shiranai Monogatari
During the production of the 2009 anime series "Bakemonogatari", Supercell was asked to compose what would later become the ending theme song "Kimi no Shiranai Monogatari". It was already decided that Supercell would release their debut album "Supercell" in March 2009, which used the Vocaloid singing synthesizer Hatsune Miku as the vocalist. In place of Miku, Supercell employed the singer Nagi Yanagi, a vocalist who had previously submitted cover versions of songs to the Nico Nico Douga video sharing website under the name Gazelle. "Kimi no Shiranai Monogatari" was the first release by Supercell to not use Miku as the vocalist. Yanagi was chosen for "Kimi no Shiranai Monogatari" by Ryo, who had been a fan of her voice even before uploading his own songs to Nico Nico Douga in late 2007. Roughly the next day after Ryo uploaded Supercell's first song "Melt" onto Nico Nico Douga in December 2007, Yanagi uploaded a cover of her singing the song. Yanagi, who was herself a fan of Ryo's music, contacted him and the two talked about someday collaborating.