ABOUT

"Alchemized Voice" is a virtual singer project centering on Alchemist ZETHIEL, who alters his voice to sing in different ways via "alchemization."

1. VIRTUAL LIVE SINGER

At the final stage of the self-alchemization, ZETHIEL realized his true awakening. Wanting to convey his heart to the world, the full emotion and nuance of his voice can be heard, as he continues to grow and blossom.

2. VIRTUAL SYNTHESIZED SINGER

Vocal fragments across multidimensional space-time carry the memories of ZETHIEL's journey. He gathers these vocal fragments to construct synthesized vocals that he can use to expand the range of his singing potential and possibility -- and to tell the story of his fragmented past.The singing synthesis based on ZETHIEL's expressive, highly skilled, yet progressively changing vocals creates a range of musical possibility. It is his desire that he can share his emotive voice with you, as a means by which you may freely express your musical creativity and ideas.

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CHARACTER

Information about the characters of "Alchemized Voice."

Alchemist ZETHIEL
Japanese Name: 錬金師ゼシエル | Renkinshi ZETHIEL
Chinese Name: 金 星天 | Jīn Xīngtiān
Birthday: 16 November
Height: 5'4" / 163cmA mystical alchemist, whose song magic resonates with lost worlds and memories. Forging his own song, he bears a flowing and light voice that enchants the soul.Alchemist ZETHIEL is the face of the “Alchemized Voice” project. He represents the virtual singer as well as the synthesized singers.
ZETHIEL altered his own body using alchemy, and travels across time-space and alternate dimensions to explore beyond his own limits. A kind and gentle soul; and yet full of hope and conviction after breaking through a past of despair.
Currently, he travels across the multiverse experiencing different worlds and collecting memories. He does his best to fight against the destruction of worlds, but he cannot always save them. Thus, he preserves their memory through song magic.
Although ZETHIEL is full of conviction and determination to fulfill his goals, his fragile heart is continually rent apart by the dark tides of calamity and grief that plagues the multiverse. A witness to countless deaths, grief has slowly begun to envelop his entire being.
He hopes his songs will keep the memory of lost worlds alive, and convey his heart in all of its complex feelings.ZETHIEL ZERO is a young teenage boy around the age of 16-17. He specifically represents the ZETHIEL ZERO voicebanks.
He is the younger form of Alchemist ZETHIEL, before he became an alchemist to alter his own body. He loves singing and can put on a confident act, but in his heart he holds a lot of uncertainty.

Second Alchemization: “Chrysopoeia”
The main form of ZETHIEL, the design debuted in 2024. An alchemist's gear for taking on the multiverse and its memories.

First Alchemization: “Ens Primum”
The debut form of ZETHIEL. A simple yet sleek outfit that emphasizes his gentle nature, with the style of a virtual singer.

Alternate Alchemization: “Caduceus”
In a certain world, in a land known as Xiangyue, Zethiel acquired a precious artifact, a kind of dragonstone. It was in the shape of a gem, glimmering and beautiful. It can turn its wielder into a dragon, granting them draconic powers.

Past Alchemization: “Arcanum”
Also known as ZETHIEL ZERO, this is the younger form of ZETHIEL as a teenager. A comfortable and casual outfit -- the sweater is his favorite.
In the past, ZETHIEL was summoned to a mysterious world where music becomes magic. He was chosen, among a few others, to save the world using his singing voice. However, he wasn't strong enough to save anyone.

Past Alchemization: “Obscurum”
A form of ZETHIEL ZERO that is derived from his heart and desires for the future. It's an incorporeal form created from magic.He created this form at age 16. Since he hated the way he looked and sang, he often used this form to gain confidence. However, it does use up more magic energy and compromises the potency of his singing power – at least, that's what ??? warned against. Eventually, Zethiel would simply use the form, but not the altered voice as a compromise, especially for dire situations.

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VOICEBANK

Download the synthesized singers of "Alchemized Voice."All downloads: Google Drive Folder

• Download UTAU
• Download OpenUtau
• Download RVC

Alchemized Voice's voicebanks featuring ZETHIEL convey his expressive singing voice, past and present. The purpose is to allow ease of use and accessibility, while capturing and preserving the nuances of ZETHIEL's voice changes through the years. The project encompasses SVS (singing vocal synthesis) and SVC (singing vocal conversion)Come and be a part of ZETHIEL's journey, and express your musical feelings with his vocal fragment alchemization.Below is a quick overview of the vocals, and beyond that are more details -- specifications, samples, and demos.

An additional note: Regarding the singing corpus/database for ZETHIEL, for use in AI and similar projects, please contact the project manager Xiel to gain access. The database contains data across the mezzo-soprano, alto, high tenor, and low tenor vocal ranges, with primarily English and Japanese singing data.At some point in the future, these files shall be made publicly available, in the interest of preserving and perpetuating the voice of ZETHIEL. I hope you can use it in a way that promotes creativity, artistry, and ethical technological practices.

- MAIN SERIES -

ZETHIEL ZERO (UTAU)
Date Recorded: February 2019
Type: Japanese VCV
Pitch: C4, G4*
Voice: A voice that excels in the mezzo soprano range. High energy in the upper range, and a unique voice color with a cooler tone in the lower range. Suitable for moving and upbeat melodies.
Configuration: Project Chrysalis*spliced and synthesized from incomplete data.ZETHIEL's memory: "They all looked to me. They all needed my help. I was chosen. So why do I exist, when my voice cannot save anyone?”

ZETHIEL ZERO AI (RVC)
Project Name: zethielzero
Version: RVC v2
Date Recorded: 2018-2019
Base Languages: English, Japanese
Data Time: 40 minutes
Recommended Range: A3-D5 (head voice up to A5)
Recommended Input Singer: ZETHIEL ZERO (UTAU)RVC Model: HuggingFace
RVC Lite Model: Kits.AI

ZETHIEL ZERO AI (DS)
Date Recorded: 2018-2019
Language: Japanese
Data Time: 20 minutes
Recommended Range: A3-D5
Configuration: Kibai Hyena/Annoying Hyena

ZETHIEL YU (UTAU)
Date Recorded: 2020
Type: Japanese CV
Pitch: A3
Voice: A soft tenor vocal with a youthful color. Suitable for ballads, low-tempo songs, and soft melodic songs.
Configuration: nearsgardenZETHIEL's memory: "Finally, my true self begins to emerge. I can sing – I can finally sing as myself. And I need to keep singing, and keep following through with self-alchemization. I cannot stop, not now!"

ZETHIEL YU AI (RVC)
Project Name: zethielyu
Version: RVC v2
Date Recorded: 2020-2021
Base Languages: English, Japanese, Mandarin Chinese, German
Data Time: 2 hours
Recommended Range: C3-C5 (chest voice) up to F5 (falsetto)
Voice: A unique and youthful voice that excels in the high tenor range. Able to belt high for powerful songs, and has a light tone with appealing falsetto for softer songs.
Recommended Input Singer: ZETHIEL YU (UTAU)*KNOWN ISSUES: May skip/"break up" notes occasionally, although it's usually a very minor occurrence. It is recommended to run the inference again with a different cut if this occurs. An update is planned to fix this.

ZETHIEL JIN (UTAU)
Date Recorded: 2022
Type: Japanese CV
Pitch: A3, C3
Voice: A natural and light tenor vocal with versatility for various genres. A beautiful flowing high range, with low range capabilities.
Configuration: nearsgardenZETHIEL's memory: "We're almost there. Alchemization has been going very well – I can maintain a lower pitch now. Also, in my heart, I feel a new power beginning to awaken…"

- APPEND SERIES -

ZETHIEL KAN (UTAU)
Date Recorded: 2021
Type: Japanese CV
Pitch: A3
Voice: A strong and solid tenor vocal with a resonant, bright tone. Suitable for upbeat or intense songs.
Configuration: nearsgarden

ZETHIEL SEI (UTAU)
Date Recorded: 2021
Type: Japanese CVVV
Pitch: E4
Voice: A cool vocal intended for powerful songs and solid expression in the tenor/alto range, giving the impression of a mature tone.
Configuration: Project Chrysalis

ZETHIEL FUU (UTAU)
Date Recorded: 2021
Type: Japanese CV
Pitch: A3
Voice: A cute and bright vocal with a refreshing tone, suitable for cheerful and upbeat music.
Configuration: Project Chrysalis

more to come...

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TERMS OF USE

CHARACTER AND VOICEBANK USAGE INFORMATION

The “Alchemized Voice” project encompasses the character Alchemist ZETHIEL, the music featuring ZETHIEL’s voice as a virtual singer, and the singing synthesis voicebanks created from ZETHIEL’s voice.Any content posted by the official “Alchemized Voice” accounts may not be used, reposted, or reuploaded without permission – which will mainly encompass Alchemist ZETHIEL as a virtual singer.Below are the terms of use for the characters and the voicebanks. Please be aware the terms of use may update at any time.Henceforth character refers to any characters of the project, and voice refers to all free singing synthesis voicebanks released under the project. Additionally, SVS refers to "singing vocal synthesis" like UTAU or DiffSinger, and SVC refers to "singing vocal conversion" like RVC.
In relation to SVC, "inference" refers to the audio that the SVC converts via a voice model.

Section 1: General
1. Using the voice or character to promote discriminatory and abusive ideology, including but not limited to racism, homophobia, pedophilia, and more is forbidden.
2. Suggestive depictions of character, and usage of voice lyrics with mild sexual innuendo are permitted.
2a. Usage and depictions in mild and fantasy violence, emotionally heavy topics, and foul language are permitted.
2b. Sexually suggestive depictions of ZETHIEL ZERO's character is forbidden.
3. Ask for permission regarding sexual depictions; songs with overly explicit sexual lyrics.
3a. Ask for permission regarding depictions of extreme violence and gore.Section 2: Voice
1. Usage of voice for commercial and non-commercial works is permitted.
1a. Usage of character – alongside voice – in commercial and non-commercial works is permitted.
1b. Usage of character only in non-commercial works is permitted.
2. Usage of SVS voice as inference in SVC is permitted, given the SVC model is ethically created and sourced.
2a. Usage of SVS voice as an inference for unethical, non-consensual sourced SVC models is forbidden.
3. Alteration of the voicebank configuration and files is forbidden.
3a. Redistribution of the voicebank may be permitted, particularly in scenarios where one would like to distribute and promote “Alchemized Voice” to a different scope of audience.
4. Please ask for permission regarding the use of any voice data, outputs, and files for secondary voicebank or voice model creation.Section 3: Character
1. Alteration of the character designs in terms of clothes, hairstyle, and skin tone; free interpretation of character’s traits is permitted.
1a. Free interpretation of ZETHIEL’s gender is mostly permitted, however, the portrayal of Alchemist ZETHIEL and ZETHIEL ZERO as female characters is strictly forbidden.
2. Please ask for permission for usage of the character only in commercial works, like derivative or secondary merchandise.

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SPECIAL

Special contents relating to ZETHIEL.

1ST COVER ALBUM: SERAPHIC ALCHEMY

• Read his story here.

Alchemist ZETHIEL's first cover album. This is the song of a young man with a voice as beautiful as the heavens, and a heart as delicate as a feather.*DISCLAIMER: This cover album is for free streaming only. No profit shall be made from this whatsoever.YouTube
Soundcloud
Article on Creation Process @ Tumblr

FEATURED GALLERY

A selection of commissioned works, project artworks, gifts, and self-drawn illustrations of ZETHIEL.

STORY OF ALCHEMIZATION

TBA