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IA VOCALOID3 IA ROCKS English (concept) | CeVIO Creative Studio CeVIO AI | Songs Albums Notable Originals

IA (イア) is a Japanese VOCALOID developed and distributed by 1st PLACE Co., Ltd., and was released in January 2012 for the VOCALOID3 engine. Her voice is provided by the Japanese female singer-songwriter, Lia, known for "Tori no Uta".

She received an additional VOCALOID3 voicebank known as IA ROCKS in June 2014. In March 2017, she received a CeVIO talk voicebank.

In July 2016, an English voicebank was confirmed to be in the works,[2][3][4] and was later released for CeVIO in June 2018. In July 2020, another three voicebanks were confirmed to be in the works for CeVIO's new engine: CeVIO AI. These voicebanks were later revealed to be IA TALK, IA SONG and IA SONG ENGLISH.[5][6]


IA is the first vocal in the "- ARIA ON THE PLANETES -" project.[7]

The design philosophy 1st Place worked toward was to make the voice simple and straightforward, but easy to adjust and customize, letting creators create their own version of IA.[8]

IA has little background, however she and ONE were given some background information for the ARIA - IA Musical & Live Show – performances. In a series of YouTube videos dubbed ARIA STATION, IA and ONE introduced their home-world known as Planet ARIA. Planet ARIA is described as a world similar to Earth with various life forms that resonate and co-exist together, several of whom raised IA & ONE.

According to a livestream in June 2021, HIPPI taught IA how to play guitar before she came to earth. HIPPI was regarded as a strict teacher to her.[9]

IA had no official age up until March 4, 2022, where she was confirmed to be 16 years old.[10]


"IA" is taken from her voice provider's name, "Lia".

There are at least two ways to read her projects name of "- ARIA ON THE PLANETES -":

  • The words "Aria" and "Planetes" are Latin and Greek for "open space" and "planet" respectively, giving the translation of "Open Space on the Planet".
  • "Aria", is also the Italian word for "air" and is used as a term in opera for expressive pieces, usually sung by a single singer. This also fits in with her more opera-esque vocal results compared to other released Japanese Vocaloids.

When she was first released, overseas fans often mistook "Aria" as the name of the VOCALOID.


Her design was illustrated by Aka Akasaka (D. Z.), while the design direction was by Maxilla Inc.[11] It was decided that they would go for soft colours instead of vivid ones. At the time, there was skepticism towards avoiding vivid colours as there was a fear of her not selling because of the softer tones. Lia herself wanted her to be cute and pretty and was satisfied the first time she was shown the artwork.[12]

Despite the myth of IA's age being 15, she has had no official age. This myth seems to originate from a section underneath the paragraph on IA about her provider Lia, wherein one of the first things mentioned was that Lia debuted in America at 15 years old.

In IA's 6th and ONE's 3rd anniversary special talk live, it was revealed that IA is 155 cm tall.


For more on VOCALOID relationships, see the FAQ.

  • ONE - Fellow "- ARIA ON THE PLANETES -" project vocal created for CeVIO.
  • HIPPI - Fellow "- ARIA ON THE PLANETES -" project character.

Four inhabitants of their planet were introduced and their relations to IA and ONE were revealed:

  • A gray, multicolored cat named “チコー” (also known as “Neko-san” or simply as “cat”) is one of the spirits that exists on ARIA. She acts as a mother and has been with IA & ONE all of their lives and came to Earth with ONE. She is described as being a very sweet cat that watches over IA & ONE. [13].
  • The second member revealed is a large elder tree named “Chōrō” (“長老”, meaning elder) or "Choro no ki”, (長老抜き,meaning the eldest tree.). Chōrō is described to be one of the oldest spirits on Planet ARIA and acts as a “grandfather” figure to IA and ONE. He is very knowledgeable about ARIA and is connected to everything on the planet. He was described to have taught IA and ONE all that they know. [14]
  • The third member revealed was a purple, bipedal cheetah named “チート” (also known as “Cheet”) [15]. Cheet acts as IA and ONE’s dance teacher. She is described as being stern and is able to move very quick. [16]
  • The last member introduced in the series is a large white phoenix named “フェニックス”(also known as “Phoenix” or simply known as “Nix”[17]). He acts as a singing teacher and voice trainer for IA and ONE. It was revealed that he learned how to transform into a human form from Chōrō.[18]

During the IA 9th & ONE 6th Anniversary ‒Super LIVESHOW- on January 27th, 2021, three additional characters were unveiled, one of whom bears the name "H" on their nametag and the other two being an anthropomorphic lion and a reindeer-like creature. Their relationship to IA (and ONE) is unknown, however they were announced to be “ARIA” members.[19]



The garage kit IA

Information on IA was released much slower than the average VOCALOID. Her promotions have taken the approach to make her seem otherworldly and mysterious.

The licensing for IA is slightly different than past VOCALOIDs, and it is worth taking the time to read this page for more details. Unlike some past VOCALOIDs, users can use her image on CDs, flyers and posters without requesting permission, although some consent from the company is needed for greater use of her image. This is a departure from past VOCALOIDs such as Crypton Future Media, who require you to ask permission for use of their VOCALOIDs' images on things such as CDs, flyers and posters.

1st Place likes collaborations between their company and others. Their marketing style was designed to introduce IA to people unfamiliar with VOCALOID, expanding their audience.[20]


The following covers the VOCALOID software, for future releases see CeVIO releases.

The IA vocal was originally intended to give a vocal based on the clear and crisp vocal of Lia. It is operatic in nature and noted for its large voice range and tempo range, both being the largest at its time of release. This allowed the voicebank to cover a wide range of roles and music genres.
A voicebank for IA that as its name suggests is more suited for rock genre of music. Its design is based on user feed back from the original IA and is intended to cover issues which the original voicebank had. Like the original vocal, it had a large vocal range and tempo range, allowing it to cover a number of genres and roles within music. In contrast to the original vocal, this is an example of voice acting and does not sound like Lia's normal singing style.
  • "IA-ARIA ON THE PLANETES - α Type C" (VOCALOID3), limited trial
  • IA ROCKS (Mobile VOCALOID Editor)

Music featuring IA

  • On this wiki, IA is featured in 281 songs , 193 albums , 10 series , 2 events.
IA Plain logo.png
YouTube logo
Translation 六兆年と一夜物語 (Roku Chounen to Ichiya Monogatari)
Categories Original song
YouTube logo
Translation Setsuna Drive
Taki Yoshimitsu
Categories Original song
Niconico logo
Translation Sub-Cul-san to Ichigan-kun
Yuki Nishijima
Categories Original song
Niconico logo
Translation イアイア★ナイトオブデザイア (IA IA★Night of Desire)
Categories Original song
Search for music featuring IA [show/hide]



Google Trends



IA developed a good reputation as a reliable voicebank library among many producers, this owed to much of her success. IA was well received and had many hits in the Nico Nico Douga weekly rankings after her release.

Within 6 months of her release, several songs hit 1,000,000+ views on Nico Nico Douga, whereas none of the other VOCALOID3 vocals achieved success of this caliber until December 2014 when Yuzuki Yukari managed to achieve her first 1,000,000 song. This put her on par with some of the more successful VOCALOID2 era voicebanks. Lia herself was reported as surprised when she became popular as she did not expect her to do so well. She also commented on how there were many fans of IA who did not even know who she (Lia) was.[12]

On 1st July 2015, it was announced that her playback of related videos had reached 100 million, views were coming in from both Japan and abroad. She had also experienced several live performances in Taiwan, France and North America. This lead to the release of her official app.[21][22]


IA's popularity has lead to further vocal development being considered for her and in 2014, IA-ARIA ON THE PLANETES - α Type C was released as a trial version via a one-month long feedback campaign. Several months later, it was announced that the finalized version of the new vocal library would be made available for sale in June of the same year. Her popularity also allowed her to expand into other languages. In mid-2016, an English vocal was announced.


A survey released in 2015 in relation to the popularity of the VOCALOIDs on website Nico Video revealed IA was the 4th most popular Vocaloid for 2014.[23]

  • First 1st Place VOCALOID released.
  • First female VOCALOID released by 1st Place.
  • First VOCALOID3 to hit over 1 million views on NND.
  • Having the highest tempo among all VOCALOIDs.
  • First new VOCALOID3 to receive an additional voicebank upgrade.
  • First VOCALOID to have official concerts in many countries of Europe.
  • First VOCALOID to have a concert on South America.


External links

Language Description Site
Japanese 1st Place official homepage Link
Japanese VOCALOIDia IA Discography Link
Japanese IA PROJECT The official Facebook page for VOCALOID IA Link
English IA WORLD Page The official overseas Facebook page for VOCALOID IA Link
English IA @IAWorldpage The official overseas Twitter account for VOCALOID IA. Link
Japanese IA @IA_Official_ The official Twitter account for IA Link
Japanese IAPROJECT The official YouTube channel for VOCALOID IA Link
Japanese [IA & ONE OFFICIAL] Virtual Broadcast The official YouTube channel for IA & ONE Link
Japanese IA Project The official tumblr for VOCALOID IA Link
English IA (Instagram) Official Instagram Account Link
Japanese IA&ONE公式 @IA_ONE_Official Official Twitter for IA and ONE Link
English IA on Tokyo Otaku Mode Official English page for related IA merchandise and information Link
Japanese IA Project (Jin) Producer apart of Project Link
English VOCALOID shop Product page for IA Link
English VOCALOID shop Product page for IA ROCKS Link
English deviantArt , art and media community Link
Japanese Pixiv , art and media community Link