VOCALOID development

Ueki-loid (植木ロイド) is a Japanese VOCALOID licensed to Music Airport Inc., and as a "private" VOCALOID he is not commercially distributed.

The Ueki-loid is based upon the vocals of a famous deceased Japanese comedian, actor, singer and guitarist named Hitoshi Ueki (植木 等 Ueki Hitoshi), who died in 2007 and is a part of the "Legend of VOCALOID" line-up.[1]


5 years before his unveiling, YAMAHA was approached with the aim of creating a voicebank based on the voice of the late singer Ueki Hitoshi. Ueki-loid's production began in late 2007. While work was being made on the vocal voicebank library, work was neither confirmed or denied by both parties.

New technology allowed the phonemes to be extracted from recorded vocal tracks in order to create the Ueki-loid. A sample can be heard here.


Despite that it has been declared he will never be released, an album will be released in the future to show off the technology behind the vocals. This is more about promoting the technology that made this possible than the vocal behind the songs.[2][3]

Product InformationEdit



Polyrhythm bilibili
Demo song bilibili
呼びました? Niconico YouTube
Forever With You Niconico YouTube

Voicebank LibrariesEdit

Product Information
Package details as noted:

The following information is based on known details of a unreleased voicebank. Please note the details of this voicebank are subject to change without notice.

The voicebank was developed as follows: First, they made a voicebank from the voice of Hiro Kouichi (surname first), the eldest son of Ueki Hitoshi. Then, by a certain mathematical method, they constructed a transformation function which represented the difference in voice between the two people. Finally, they applied the function to the voicebank.[4]

It was revealed that the VOCALOID is for private use only and will never be released.[5]

Vocal traits as noted:

The vocal itself overall has a VOCALOID engine quality to it.

Software issues as noted:

Since much of the phonetic data was impossible to retrieve, as they were never recorded for Ueki Hitoshi in the first place, what you hear is mostly the VOCALOID™ engine between lyrics. Still, despite this, a lot of people were pleased with the voice and stated that it sounds similar to Ueki Hitoshi.

Additional informationEdit


Uekiloid chokaigi

Album Promotional Artwork

  • Since the original VOCALOID software had been released, it had been hoped that the voices of lost singers like Elvis Presley could be brought back to sing again. Ueki-loid is the first step in that direction, although it has been noted it will be a while before they can attempt a English voicebank using the same techniques.[6]
  • Some sources say he is the first private announced VOCALOID, however, this is not true. A VOCALOID-Flex voicebank was used in the game Metal Gear Solid: Peace Walker, also many private proto-type vocals also have been known to exist for VOCALOID with no indication any of them will ever be released. Even with this not taken into account, the first private vocal confirmed was Akikoloid-chan, who was revealed on September 6, 2011, a few months prior to Ueki-loid's announcement.


  • First VOCALOID from the "Legend of VOCALOID" series
  • First VOCALOID to have the voice of a deceased singer
  • First private male vocal for VOCALOID3

Community polls

Do you like Ueki-loid?

The poll was created at 01:21 on November 20, 2015, and so far 210 people voted.
What characteristic of Ueki-loid do you like?

The poll was created at 01:21 on November 20, 2015, and so far 122 people voted.


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External linksEdit

Japanese Music Airport Inc. official homepage Link
Japanese 植木等 Hitoshi UEKI The official Facebook page for VOCALOID Ueki-loid Link
Japanese MusicAirportJP The official YouTube channel Link
English deviantArt , art and media community Link
Japanese Pixiv , art and media community Link