OVERVIEW

ALCHEMIZED VOICE - Virtual Singer Project

VTuber, VSinger, utaite, UTAU, DiffSinger, and more.

Illustration by yori_tanomi @ Skeb

From Laxiel: "Alchemist ZETHIEL" is a fictional character I created to express my singing and vocal possibilities through. Please consider him a separate, fictional entity from myself! Ever since I created him, I've put so much love into the project and I feel like he's really saved my life. I hope you can love ZETHIEL too.

ALCHEMIST ZETHIEL ~ CHARACTER INFORMATION

Name: 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" / 163cm
A 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. It is mainly used to represent ZETHIEL as a VSinger/utaite.

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. It is now mainly used to represent his voicebanks.

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.

SPECIAL CONTENTS

1ST ORIGINAL SONG: REGRETS OF AN ANGEL RESTING

Alchemist ZETHIEL's first original song. "At the edge of the earth, will you set me free?"

Bandcamp
Streaming (TBA)
Article on Creation Process @ Tumblr

1ST COVER ALBUM: SERAPHIC ALCHEMY

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

Read his story here.

VOICEBANK DOWNLOADS & POLICY

DOWNLOAD LINKS

Download all Voicebanks & Character Visuals
View Alchemized Voice Terms of Use
Download UTAU
Download OpenUTAU (download this to use DiffSinger)
Download RVC

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)

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 CVVV
Pitch: A3
Voice: A soft tenor vocal with a youthful color. Suitable for ballads, low-tempo songs, and soft melodic songs.
Configuration: nearsgarden
ZETHIEL'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 CVVV
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: nearsgarden
ZETHIEL'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 CVVV
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 CVVV
Pitch: A3
Voice: A cute and bright vocal with a refreshing tone, suitable for cheerful and upbeat music.
Configuration: Project Chrysalis

more coming in the future..

GALLERY

WIP