Vocaloid 2 (CV Series 01) package
|Developer(s)||Crypton Future Media|
|Initial release||August 31, 2007|
|Stable release||Hatsune Miku V3 / August 31, 2013|
|Operating system||Windows, Mac OS|
|Type||Vocal Synthesizer Application|
Hatsune Miku (初音ミク?) is a humanoid persona voiced by a singing synthesizer application developed by Crypton Future Media. She uses Yamaha Corporation's Vocaloid 2 and Vocaloid 3 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 sampled from Japanese voice actress, Saki Fujita. Hatsune Miku has performed at her concerts onstage as an animated projection. Hatsune Miku is portrayed to be a 16-year-old girl with long turquoise pigtails.
The name of the character comes from merging the Japanese words for first (初 hatsu?), sound (音 ne?) and future (Miku (ミク?) sounds like a nanori reading of future, 未来, normally read as "mirai"), referring to her position as the first of Crypton's "Character Vocal Series". According to Crypton, her name is meant to signify the "first sound from the future".
Hatsune Miku was developed by Crypton Future Media, using Yamaha's Vocaloid 2 and Vocaloid 3. Hatsune's voice was created by taking vocal samples from voice actress Saki Fujita at a controlled pitch and tone. These different samples all contained a single Japanese or English phonic which, when strung together, would create full lyrics and phrases. The pitch of the samples was to be altered by the synthesizer engine itself, and was constructed into a keyboard style instrument within the Vocaloid 2 and Vocaloid 3 programs.
Crypton released the first of their "Character Vocal Series", Hatsune Miku, on August 31, 2007. Crypton had the idea to release Miku as "an android diva in the near-future world where songs are lost." Hatsune Miku was released for Vocaloid 3 on August 31, 2013, including an English vocal library.
Though developed by Yamaha, the marketing of each Vocaloid is left to the studio that created the particular Vocaloid. Yamaha themselves do maintain a degree of promotional efforts in the actual Vocaloid software, as seen when the humanoid robot model HRP-4C was set up to react to three Vocaloids—Hatsune Miku, Megpoid and Crypton's noncommercial Vocaloid software "CV-4Cβ"—as part of promotions for both Yamaha and HRP-4C at CEATEC in 2009. Japanese magazines such as DTM magazine are responsible for the promotion and introduction for many of the Japanese Vocaloids to Japanese Vocaloid fans. It has featured Vocaloids such as Miku, Kagamine Rin and Len, and Megurine Luka, printing some of the sketches by artist Kei and reporting the latest news on the Vocaloids.
Crypton has been involved with the marketing of their Character Vocal Series, particularly Hatsune Miku, which has been actively involved in the GT300 class of the Super GT since 2008 with the support of Good Smile Racing (a branch of Good Smile Company, mainly in charge of car-related products, especially itasha (cars featuring illustrations of anime-styled characters) stickers). Although Good Smile Company was not the first to bring the anime and manga culture to Super GT, it departs from others by featuring itasha directly rather than colorings onto vehicles.
Since the 2008 season, three different teams received their sponsorship under Good Smile Racing, and turned their cars to Vocaloid-related artwork:
- Studie, which participated in the 2008 and 2009 seasons using a BMW Z4 E86. Their car was painted in official Hatsune Miku art, and fan-derivative versions of Hatsune Miku in some races in the 2009 season.
- Team MOLA, using a Nissan 350Z, and they received sponsors on the final race in Fuji in the 2008 season. Images of Kagamine Rin and Len was added on their original colorings. The Fuji round, in fact, is still the only FIA race to feature two unique itasha cars competing in a single race.
- Team COX, participating in the 2010 season, which uses a Porsche 996 GT3 RSR (and will use a Porsche 997 GT3-R). Their car uses Racing Miku (an official Hatsune Miku derivative, wearing an orange race queen suit) as their image.
As well as involvements with the GT series, Crypton also established the website Piapro. Crypton has also started to star Miku in commercials for the Toyota Corolla. During the 2011 and 2012 Sapporo Snow Festival, a tram has been covered with Hatsune Miku art inside and out, with announcements recorded by Saki Fujita. In 2012, Hatsune Miku starred in a web commercial for Google Chrome and won the Bronze Lion award in the Direct Lions category of the Cannes Lions International Festival of Creativity. In 2013, Miku was featured in advertisements for the Japanese market of Domino's Pizza as part of a collaboration campaign.
The initial sales of Hatsune Miku were so high that Crypton could not keep up with the demand. In the first 12 days of sales, nearly 3,000 sales reservations were made. This was around one sale in 250 in the music software industry, quoted as "an impossible number" by Wataru Sasaki—the person in charge of the planning and production company "surprise".[clarification needed] On September 12, 2007, Amazon.co.jp reported sales of Hatsune Miku totaling 57,500,000 yen, making her the number one selling software of that time.
On April 30, 2010, a new add-on for Miku, called Hatsune Miku Append, was released containing a package of six different tones of Miku's voice: Soft (gentle, delicate voice), Sweet (young, chibi voice), Dark (mature, heartbroken voice), Vivid (bright, cheerful voice), Solid (loud, clear voice), and Light (innocent, heavenly voice). Miku Append was created to expand Miku's voice library, and as such requires the original program to be installed on the user's computer first. This was the first time a Vocaloid had such a release, and more Append versions were reported from Crypton Future Media at later dates.
To aid in the production of 3D animations, the program MikuMikuDance was developed as an independent program. The freeware software allowed a boom in fan-made and derivative characters to be developed, as well as acted as a boost for the promoting of the Vocaloid songs themselves. Another Vocaloid tool that was developed was VocaListener, a software package that allows for realistic Vocaloid songs to be produced.
An English version of Hatsune Miku was announced in 2011, and was originally to be released by the end of 2012. However, the decision to move to Vocaloid 3 and issues with English pronunciation delayed the release. It was released on August 31, 2013 via digital distribution. The Hatsune Miku Vocaloid 3 Japanese vocal library was released on September 26, 2013.
Example of a song created using Vocaloid software with vocals by Hatsune Miku.
|Problems playing this file? See media help.|
During Miku's development, Crypton decided to take a different approach from that used by the other Vocaloid sound bank publishers. It was decided that to make the product successful not only would a highly appealing voice need to be developed, but that the voice needed an image. She was originally aimed only at professional producers; the amateur and otaku market had not fully formed yet, and so were not initially considered.
The task of coming up with Miku's image went to the manga artist Kei Garō. When Kei designed Miku, his only direction was that she was an android and what her color scheme (based on Yamaha's synthesizer's signature turquoise color) was. The design on Miku's skirt and boots are based on synthesizer software colors and the bars represent the actual bars within the program's user interface. Miku was originally intended to have a different hairstyle, but Kei stuck to pigtails after trying them out. Crypton then officially created and posted Miku's personal data sheet. However, this only contained her 'physical' and technical traits; Crypton did not provide much info in the way of Miku's personality which has allowed song/music video creators and fans to associate the traits that they think suit her best.
|Height||158 cm / 5.18 ft|
|Weight||42 kg / 93 lb|
|Suggested Genre||Pop, rock, dance, house, techno, cross over|
|Suggested Tempo Range||70–150bpm|
|Suggested Vocal Range||A3–E5, B2–B3|
Nico Nico Douga, a Japanese website similar to YouTube, played a fundamental role in the recognition and popularity of the software. Soon after the release of Miku, users of Nico Nico Douga started posting videos with songs created using her sound bank. According to Crypton, a popular video with "Hachune Miku", a super-deformed Miku, holding a Welsh onion and singing "Ievan Polkka" (which led to Miku also being commonly associated with leeks/spring onions), presented the varied potential of applying the software in multimedia content creation. As the recognition and popularity of Miku grew, Nico Nico Douga became a place for collaborative content creation. Popular original songs written by a user would inspire illustrations, animations in 2D and 3D, and remixes by other users. Some creators would show their unfinished work and ask for ideas.
In September 2009, three figurines based on the derivative character "Hachune Miku" were launched in a rocket from the United States state of Nevada's Black Rock Desert, though it did not reach outer space. In late November 2009, a petition was launched in order to get a custom-made Hatsune Miku aluminum plate (8 cm x 12 cm, 3.1" x 4.7") made that would be used as a balancing weight for the Japanese Venus spacecraft explorer Akatsuki. Started by Hatsune Miku fan Sumio Morioka (also known as "chodenzi-P"), this project has received the backing of Dr. Seiichi Sakamoto of the Japan Aerospace Exploration Agency. On December 22, 2009, the petition exceeded the needed 10,000 signatures necessary to have the plates made. An original deadline of December 20, 2009 had been set to send in the petition, but due to a couple of delays in the Akatsuki project, a new deadline of January 6, 2010 was set; by this deadline, over 14,000 signatures had been received. On May 21, 2010 at 06:58:22 (JST), Akatsuki was launched, having three plates depicting Hatsune Miku and Hachune Miku in several monochrome images, composed of the miniature letters of the messages from the petition form etched in the plates. The UK 59th issue of the music and fashion magazine Clash featured Hatsune Miku as their cover star (using a real-life photo model), with a full feature on her.
The Vocaloid software has also had a great influence on the character Black Rock Shooter, who looks like Hatsune Miku but is not linked to her by design. The character was made famous by the song "Black Rock Shooter", and a number of figurines have been made. An original video animation made by Ordet was streamed for free as part of a promotional campaign running from June 25 to August 31, 2010. A televised anime series aired in February 2012.
In October 2011, Crypton showed on the official Hatsune Miku Facebook page a letter from the Japanese Minister of Economy for "contributing to the furtherance of the informatization by minister of economy."
Appearances in other media
Miku's popularity has seen various references to her in anime. Miku is the protagonist of a manga series named Maker Hikōshiki Hatsune Mix, written by Kei Garō. The manga explores the many possibilities of story-telling and has featured numerous adventures, ranging from giant-sized battles with Hatsune Miku to home exploits. There is therefore no single storyline and the entire setting within the manga is unofficial. During an episode of Zoku Sayonara, Zetsubou Sensei, Miku is seen auditioning for the voice of Meru Otonashi (Kagamine Rin and Len are referenced in the same episode). Miku's voice is used in one of the ending themes for the anime series Akikan! (episode 12). Moreover, she also sings the ending theme for the anime Yamishibai: Japanese Ghost Stories, called "Kaikai Emaki" (怪々絵巻?). During an episode in the Lucky Star OVA, Kagami Hiiragi gets magically transformed into Miku cosplay. A character in the anime Kämpfer appears dressed as Miku in episode seven. She also appeared in the large plasma screen in Chrome Shelled Regios as an endorser. She also appears in episode 11 of Baka and Test as a member of class B. Miku also appears in Maria Holic episode 12, when the class is told they have a swim meet.
A series of rhythm games starting from Hatsune Miku: Project DIVA were produced by Sega under license using Hatsune Miku and other Crypton Vocaloids, as well as "fan-made" Vocaloids like Akita Neru. TinierMe also made attire that looks like Miku's for their services, allowing users to make their avatar resemble her. Hatsune Miku and Future Stars: Project Mirai was developed for the Nintendo 3DS. Miku's appearance in this game is based on the Nendoroid series of figures. Hatsune Miku is also briefly referenced in the game Recettear, where a young man stargazing sees "The Green-Onion Girl" constellation. Also, in 2013, Saki Fujita voices Fei-Yen HD, a character based on one of Hatsune Miku's modules, in Super Robot Wars UX; this appearance does not use Miku's vocal library.
Miku's clothes appear as a costume for a playable character in the Japanese version of PangYa and was the back-up vocal for the game's season four trailer, as a downloadable costume for Sophie in Tales of Graces and is seen during a stage in the game 13-sai no Hellowork DS. Miku's clothes also appear in Phantasy Star Portable 2 as a costume for the player's female character, as well as her hairstyle and leek-themed weapons. Miku appears in the PlayStation 3 version of The Idolm@ster 2 as downloadable content. In the video game Skullgirls, one of Filia's alternate colors is based on Miku. Miku has appeared as downloadable content using the game engine M.U.G.E.N. Hatsune Miku's attire has also appeared in Phantasy Star Online 2 as a female character's costume, along with "Miku Dayō" as a Mag Design.
In August 2010, over 22,000 original songs had been written for Hatsune Miku. Later reports confirmed that she had 100,000 songs in 2011 to her name. Crypton's website promotes Miku's popularity having her voice used in over 100,000 unique songs.
One of the Vocaloid compilations, Exit Tunes Presents Vocalogenesis feat. Hatsune Miku, debuted at number-one on the Japanese weekly Oricon album charts dated May 31, 2010, becoming the first Vocaloid album ever to top the charts. Another album, Supercell, by the group Supercell also features a number of songs using Vocaloids. Other albums, such as 19's Sound Factory's First Sound Story and Livetune's Re:package, and Re:Mikus also feature Miku's voice. Other uses of Miku include the albums Sakura no Ame (桜ノ雨?) by Absorb and Miku no Kanzume (みくのかんづめ?) by OSTER-project. She had sung the original Nyan Cat called "Nyanyanyanyanyanyanya!" by daniwell-P. Kagamine Len and Rin's songs were covered by Asami Shimoda in the album Prism credited to "Kagamine Rin/Len feat. Asami Shimoda".
As a virtual idol, Hatsune Miku performed her first "live" concert during Animelo Summer Live at the Saitama Super Arena on August 22, 2009. Miku later returned to Animelo Summer Live 2012: Infinity to perform "The World is Mine" and "Tell Your World". Miku also performed her first overseas live concert on November 21, 2009, during Anime Festival Asia (AFA) in Singapore. On March 9, 2010, Miku's first solo live performance titled "Miku no Hi Kanshasai 39's Giving Day" was opened at the Zepp Tokyo in Odaiba, Tokyo. Miku performed in the United States on July 2, 2011 at the Nokia Theater at L.A. Live during the 2011 Anime Expo in Los Angeles. The concert followed the same format as the previous "39's Giving Day" concert. Hatsune Miku will perform in Japanese rock festival Summer Sonic 2013 on August 10, 2013. Hatsune Miku will be teaming up with designer Louis Vuitton and director Toshiki Okada for an upcoming Vocaloid opera. The opera, titled The End, will feature no human singers and will take place at the Theatre du Chatelet Opera House in Paris on November 13 and 15, 2013.
A young male prototype used for the "Project If..." series was used in Sound Horizon's musical work "Ido e Itaru Mori e Itaru Ido", labeled as the "prologue maxi". The prototype sang alongside Miku for their music and is known only by the name "Junger März_Prototype β".
- This article incorporates information from
- "Japanese pop star Hatsune Miku takes the stage -- as a 3-D hologram". Los Angeles Times. November 10, 2010. Retrieved November 13, 2010.
- "Miku". Behind the Name. Retrieved October 5, 2010.
- "初音ミクが未来から来ない?来た?" [Did Hatsune Miku Come From the Future? Came From?] (in Japanese). P-tina. November 9, 2007. Retrieved October 5, 2010.
- "Piapro Hatsune Miku V3". Crypton Future Media. Piapro Studio. Retrieved 18 October 2013.
- "Diginfoビデオレポート：歌声合成ソフト「VOCALOID」を使った 歌を歌うロボット" [Diginfo Video Report: The Singing Robot Which Uses the Singing Synthesis Soft "Vocaloid"] (in Japanese). Japan Corporate News Network. October 18, 2009. Retrieved July 24, 2010.
- "新VOCALOID「CV-4Cβ」、CEATECで歌う 声は中村繪里子さん" [The New Vocaloid "CV-4Cβ" Sings at CEATEC. The Vocal Comes from Eriko Nakamura] (in Japanese). IT Media. October 8, 2009. Retrieved July 24, 2010.
- "The Rumored No. 808 Hatsune Miku Studie Glad BMW Z4 Latest News" (in Japanese). Super GT.net. August 18, 2008. Retrieved August 21, 2008.
- "Itasha storm in Super GT. Report of Final Race at Mt. Fuji (Page 3)" (in Japanese). ASCII. November 11, 2008. Retrieved November 16, 2008.
- "PIAPRO(ピアプロ)|CGM型コンテンツ投稿サイト" [Piapro | CGM Style Contents Submission Site] (in Japanese). Crypton Future Media. Retrieved July 11, 2010.
- "Hatsune Miku+Corolla - driven by the sound of success". Toyota. Retrieved May 6, 2011.
- "札幌市内の路面電車が「雪ミク」仕様に!車内アナウンスは藤田咲" [A Tram Inside Sapporo Has Become "Snow Miku"! The Announcer Inside the Tram is Saki Fujita] (in Japanese). RBB Today. February 11, 2011. Retrieved December 18, 2011.
- "札幌の街を駆け抜けるかわいすぎる雪ミク電車を激写!" [A Spectacular Photo of the Cute Snow Miku Train Running Through Sapporo!] (in Japanese). ASCII Media Works. December 18, 2011. Retrieved December 18, 2011.
- "Google Chrome's Japanese Ad with Hatsune Miku Streamed". Anime News Network. December 15, 2011. Retrieved December 16, 2011.
- "Google Chrome's Hatsune Miku Ad Wins Bronze in Cannes Lions". Anime News Network. June 20, 2012. Retrieved September 25, 2012.
- "祝!カンヌ国際広告祭でGoogle Chromeの初音ミクCMが銅賞" [Congratulations! At the Cannes International Ad Festival, Google Chrome's Hatsune Miku Commercial Won the Bronze Prize] (in Japanese). Hatsune Miku Miku. June 20, 2012. Retrieved September 25, 2012.
- "Bewildered Domino's CEO unveils all-singing all-dancing pizza". Metro. March 8, 2013. Retrieved April 30, 2013.
- "Domino's Hatsune Miku Pizza Boxes Sells Out". Anime News Network. March 13, 2013. Retrieved April 30, 2013.
- "異例の売れ行き「初音ミク」 「ニコ動」で広がる音楽作りのすそ野" [Unprecedented Demand for "Hatsune Miku"; the Music Maker Spread on Nico Nico Douga] (in Japanese). IT Media. September 12, 2007. Retrieved November 15, 2010.
- "初音ミク・アペンド（Miku Append）" [Hatsune Miku Append (Miku Append)] (in Japanese). Amazon.co.jp. Retrieved April 30, 2010.
- "Miku Append" (in Japanese). Crypton Future Media. Retrieved November 8, 2010.
- "Crypton's Twitter page" (in Japanese). Twitter. Retrieved July 8, 2010.
- "Vocaloid Promotion Video Project". MikuMikuDance. Geocities. Retrieved July 9, 2010.
- "VocaListener" (in Japanese). Tomoyasu Nakano and Masataka Goto. Retrieved July 9, 2010.
- "Online VocaListener". Vocaloidism. May 3, 2009. Retrieved July 13, 2010.
- Jrharbort. "Miku & Kaito News Blip From The NYCC". Mikufan. Retrieved December 26, 2012.
- "(Vocaloid2情報)企画制作時の悩みと答え(後半)" (in Japanese). Crypton Future Media. May 25, 2007. Retrieved August 11, 2013.
- "Who is Hatsune Miku?". Crypton Future Media. Retrieved March 7, 2013.
- "What is the "HATSUNE MIKU movement"?" (PDF). Crypton Future Media. Retrieved March 16, 2013.
- "How Hatsune Miku opened the creative mind: Interview with Crypton Future Media" (in Japanese). IT Media. February 25, 2008. Retrieved February 29, 2008.
- "DTM in the boom again: How anonymous creators are discovered by Hatsune Miku" (in Japanese). IT Media. September 28, 2007. Retrieved February 29, 2008.
- "Hachune Miku Figure to Ride Rocket from Nevada This Month". Anime News Network. September 8, 2009. Retrieved July 14, 2010.
- "「あなたも宇宙開発を」 "初音ミク衛星"打ち上げ目指す「SOMESAT」" ["You Too Will Explore Space" Aiming to Launch the "Hachune Miku Satellite" "SOMESAT"] (in Japanese). IT Media. October 8, 2009. p. 1. Retrieved July 14, 2010.
- "金星探査機「あかつき」に初音ミク絵を搭載する署名" [Sign to Get Hatsune Miku Image on Board Venus Explorer Akatsuki] (in Japanese). Google. Retrieved December 18, 2009.
- "初音ミク搭乗の「あかつき」、打ち上げに再チャレンジ" ["Akatsuki," Ridden by Hatsune Miku, Challenges to Be Launched Again] (in Japanese). IT Media. May 20, 2010. Retrieved May 28, 2010.
- "初音ミクついに宇宙へ！ 「あかつき」打ち上げ成功" [Hatsune Miku Eventually Goes to the Space! "Akatsuki" Was Successfully Launched] (in Japanese). IT Media. May 21, 2010. Retrieved May 28, 2010.
- "Pixel Perfect - Meet Hatsune Miku". Clash. February 2, 2011. Retrieved February 2, 2011.
- "ブラック★ロックシューター :: supercell" [Black Rock Shooter :: supercell] (in Japanese). Supercell. Retrieved July 8, 2010.
- "Black Rock Shooter Anime to Be Streamed for Free". Anime News Network. March 23, 2010. Retrieved July 8, 2010.
- "TV Animation Black Rock Shooter | On Air". Noitamina. Retrieved February 16, 2012.
- "Hatsune Miku x TinierMe Gacha". Gcrest Entertainment. Retrieved July 23, 2010.
- "Hatsune Miku to Appear in American MMO TinierMe". Anime News Network. July 21, 2010. Retrieved July 23, 2010.
- "Nintendo Announces Monster Hunter 4, Hatsune Miku Games for 3DS". Anime News Network. September 13, 2011. Retrieved September 13, 2011.
- "The Idolm@ster 2 PS3 Port to Feature Hatsune Miku Herself". Anime News Network. October 4, 2011. Retrieved October 5, 2011.
- "Hatsune Miku Joins Phantasy Star Online 2". Anime News Network. Anime News Network. March 18, 2013. Retrieved September 18, 2013.
- "Who is Hatsune Miku?". Crypton Future Media. Retrieved May 11, 2013.
- "初音ミク"ボーカロイドアルバム"が徳永を押さえ、初首位" [Hatsune Miku "Vocaloid Album" Reaches #1 for the First Time Overtaking Tokunaga]. Oricon Style (in Japanese). Oricon. May 25, 2010. Retrieved July 1, 2010.
- "supercell feat.初音ミク 1st Album "supercell" Special WEB" [Supercell feat. Hatsune Miku 1st Album Supercell Special WEB] (in Japanese). Supercell. Retrieved March 24, 2010.
- "First Sound Story" (in Japanese). Amazon.co.jp. Retrieved July 8, 2010.
- "livetune feat.初音ミク specialsite" [livetune feat. Hatsune Miku specialsite] (in Japanese). Victor Entertainment. Retrieved July 8, 2010.
- "Re: Mikus" (in Japanese). Livetune. Retrieved July 8, 2010.
- "下田麻美「Prism/鏡音リン・レン feat. 下田麻美」の収録曲が明らかに" [The Songs on Asami Shimoda's "Prism/Kagamine Rin/Len feat. Asami Shimoda" Are Revealed]. Mycom Journal (in Japanese). Mainichi Communications. May 22, 2009. Retrieved July 23, 2010.
- "Hatsune Miku Virtual Idol Performs 'Live' Before 25,000". Anime News Network. August 23, 2009. Retrieved August 26, 2009.
- "影山、堀江、初音ミクも！「アニサマ」出演者追加" [Also Kageyama, Horie and Hatsune Miku! Performers for "Anisama" Are Added]. Oricon Style (in Japanese). Oricon. August 6, 2009. Retrieved July 15, 2010.
- "Virtual Idol "Hatsune Miku" to perform overseas at "I LOVE anisong" stage!". Anime Festival Asia. Retrieved November 24, 2009.
- "「電子の歌姫」初音ミクが海外初公演" ["Electronic Diva" Hatsune Miku's First Oversea Concert Is Held] (in Japanese). Nikkan Sports. November 21, 2009. Retrieved July 15, 2010.
- "Hatsune Miku Virtual Idol to Hold 1st Solo Concert". Anime News Network. December 10, 2009. Retrieved July 15, 2010.
- "初音ミクによるソロコンサートが開催、39個の秘密も明らかに" [Hatsune Miku Performs A Solo Concert, And 39 Secrets Are Revealed] (in Japanese). Famitsu. March 10, 2010. Retrieved July 15, 2010.
- "Japan's Virtual Pop Star Hatsune Miku To Make U.S. Concert Debut At Anime Expo 2011". Anime Expo. May 12, 2011. Retrieved May 18, 2011.
- "Louis Vuitton And Marc Jacobs To Team Up With Hatsune Miku". Japanverse. November 22, 2012. Retrieved April 5, 2013.
- "「イドへ至る森へ至るイド」 Vocals & Voices の発表!!" ["Ido e Itaru Mori e Itaru Ido" Vocals & Voices Announcement!!] (in Japanese). Sound Horizon. June 7, 2010. Retrieved July 28, 2010.
- "Project if...Crypton". Crypton Future Media (in Japanese). Twitter. June 7, 2010. Retrieved July 28, 2010.
- Crypton Future Media official website (Japanese)