# Ayase (music producer)

Ayase (born April 4, 1994) is a Japanese musician and record producer. He is best known as a Vocaloid producer and composer for Yoasobi, a musical duo composed of himself and vocalist Ikura. He was also a vocalist of the rock band Davinci until its disbandment in 2020.

## Early life

Ayase was born on April 4, 1994, in Ube, Yamaguchi Prefecture, Japan. At the age around 3 or 4, he received his first piano lessons by his grandmother who was a music teacher. When he started elementary school, he received professional piano lessons at a music school. In his later grade school years, he also learned how to play acoustic guitar after he was given an acoustic guitar as a Christmas present. The first song he learned to play on guitar was originally written by Ringo Sheena. His early musical influences were Exile, Sukima Switch, Kobukuro, Radwimps, Aiko, and Post Malone. He also stated that he was influenced by several rock and metal bands, such as Maximum the Hormone, Coldrain, Crossfaith, SiM, Slipknot and Bring Me the Horizon before he found the band.

## Career
### Davinci

When he was 16, Ayase formed his rock band Davinci with classmates from high school, performing under the name Keiichirō, and being in charge of vocalist and leader of the band. Due to his band activity, he later dropped out of high school, and, in 2016, the band relocated to Tokyo. In October 2018, the band went hiatus due to Ayase's medical treatment of peptic ulcer disease. The band announced the disbandment two years later in July 2020.

### Solo activities

During the band's hiatus, Ayase started making music using the Vocaloid software voicebank Hatsune Miku during his stay at the hospital. He released his first song "Sentensei Assault Girl" via video-sharing website YouTube and Niconico on December 24, 2018. Since then, he continued self-published several songs, including "Last Resort" in April 2019, which gained his first popularity. Eventually, Ayase released his debut extended play Ghost City Tokyo, recorded by Hatsune Miku vocals, on November 17, 2019. His second EP Mikunoyoasobi was released exclusively on CD to Tower Records Japan on January 6, 2021. The EP contains cover versions by Hatsune Miku of seven tracks from Yoasobi's debut EP The Book by Hatsune Miku, including "Yoru ni Kakeru", which previously appeared on Ghost City Tokyo.
Ayase's self-cover of two tracks from Ghost City Tokyo, "Yoru Naderu Menō" and "Yūrei Tōkyō", were released to streaming platforms on September 8, 2021, after published on YouTube and Niconico in 2019–2020. He collaborated with Creepy Nuts and Lilas Ikuta on the single "Baka Majime", which featured on All Night Nippon 55th-anniversary stage drama Ano Yoru o Oboe Teru. Ayase released his first original song "Hōwa", alongside self-cover of "Cinema", on September 30, 2022. In 2023, he recorded two anime opening themes: "Shock!" for Buddy Daddies, and "Hiten" with R-Shitei [ja] for the 2023 edition of Rurouni Kenshin. Ayase and Vocaloid producers Syudou, Surii, and Tsumiki, as Dreamers, for the collaborative EP Ryūgūjō; Ayase wrote the song "Kira Kira Kira". It was released exclusively at Creators Market of Hatsune Miku: Magical Mirai 2023 festival in Osaka on August 11. In 2024, Ayase wrote and performed the song "From Now!", which also co-composed and arranged by Yasutaka Nakata, and was released on September 6. It was used for limited event quest and commercial for mobile game Monster Hunter Now.
As songwriter and producer, Ayase has written and produced several songs for artists like Lisa, Uru, Nana Mori, Hoshimachi Suisei, Hey! Say! JUMP, and Poppin'Party, etc. In 2024, he was in charge of writing and producing the theme song for 2024 medical film Doctor-X: The Movie, titled "Episode X", which was performed by Ado.

### Yoasobi

Around the time "Last Resort" popularized, in mid 2019, Ayase received an offer from Sony Music Entertainment Japan's Yohei Yashiro and Shuya Yamamoto, to collaborate on a project to produce songs inspired by short stories published on creative writing social media Monogatary.com [ja]. He found Ikura on Instagram, where she covered the song, and later checked her YouTube channel, and contacted her directly to persuade her to form the duo, called Yoasobi. Their debut single "Yoru ni Kakeru", which was released in December 2019, went viral and became a musical success in Japan which resulted in Yoasobi increasing popularity in Japanese music scene.

## Personal life

Ayase has been dating Nina Ai, who works on some of Yoasobi's cover artworks and music videos, including "Yoru ni Kakeru".

## Discography
### Extended plays

List of extended plays, with selected details, chart positions and sales :
| Title | Details | Peak positions | Peak positions | Peak positions | Sales |
| Title | Details | JPN | JPN Cmb. | JPN Hot | Sales |
| Ghost City Tokyo | Released: November 17, 2019 Label: Self-release Formats: CD, DL, streaming Track listing "Happy Ender" (ハッピーエンダー) "Fiction Blue" (フィクションブルー) "Last Resort" (ラストリゾート) "Killer Queen" (キラークイーン) "Violeta" (ヴァイオレッタ) "Ghost City Tokyo" (幽霊東京) "Yoru ni Kakeru" (夜に駆ける, Hatsune Miku version; CD only) "Yoru Naderu Menō" (夜撫でるメノウ, Ayase version; CD only) | — | — | — | |
| Mikunoyoasobi | Released: January 6, 2021 Label: Sony Japan Formats: CD, DL, streaming | 15 | 24 | 18 | JPN: 3,916 |
| "—" denotes releases that did not chart or were not released in that region. ||||||

### Singles

List of singles, with selected chart positions, showing year released, certifications and album name :
| Title | Year | Peak chart positions | Peak chart positions | Peak chart positions | Certifications | Album |
| Title | Year | JPN | JPN Cmb. | JPN Hot | Certifications | Album |
| "Suima" (睡魔) (with Kankan) | 2021 | — | — | — | | Non-album single |
| "Yoru Naderu Menō" (夜撫でるメノウ) | 2021 | — | 24 | 25 | RIAJ: Platinum (st.) | Ghost City Tokyo |
| "Yūrei Tōkyō" (幽霊東京) | 2021 | — | 24 | — | | Non-album single |
| "Baka Majime" (ばかまじめ) (with Creepy Nuts and Lilas Ikuta) | 2022 | — | 50 | 38 | RIAJ: Platinum (st.) | Ensemble Play |
| "Hōwa" (飽和) | 2022 | — | — | — | | Non-album single |
| "Cinema" (シネマ) | 2022 | — | — | — | | Non-album single |
| "Shock!" | 2023 | — | — | — | | Non-album single |
| "Hiten" (飛天) (with R-Shitei) | 2023 | 38 | — | 73 | | Non-album single |
| "Kira Kira Kira" (キラキラキラ) (as Dreamers) | 2023 | — | — | — | | Ryūgūjō |
| "From Now!" | 2024 | — | — | — | | Non-album single |
| "—" denotes releases that did not chart or were not released in that region. |||||||

### Non-commercial releases

List of non-commercial songs, showing title, year released, vocalist, and album :
| Title | Year | Vocalist(s) | Album |
| "Sentensei Assault Girl" (先天性アサルトガール) | 2018 | Hatsune Miku | Non-album songs |
| "I'm Not Crying" (泣いてない) | 2019 | Hatsune Miku | Non-album songs |
| "Happy Ender" (ハッピーエンダー) | 2019 | Hatsune Miku | Ghost City Tokyo |
| "Yoru Naderu Menō" (夜撫でるメノウ) | 2019 | Hatsune Miku | Non-album songs |
| "Last Resort" (ラストリゾート) | 2019 | Hatsune Miku | Ghost City Tokyo |
| "Pseudohumans" (人間モドキ) | 2019 | V Flower and Hatsune Miku | Non-album songs |
| "Killer Queen" (キラークイーン) | 2019 | Hatsune Miku | Ghost City Tokyo |
| "Fiction Blue" (フィクションブルー) | 2019 | Hatsune Miku | Ghost City Tokyo |
| "Cynical Night Plan" (シニカルナイトプラン) | 2020 | Hatsune Miku | Non-album songs |
| "Yokubari" (よくばり) | 2020 | Hatsune Miku | Non-album songs |
| "Bitter Sweet Samba" (Ayase remix) | 2021 | — | Non-album songs |

### Guest appearances

List of non-single guest appearances, showing title, year released and album name :
| Title | Year | Album |
| "Tachiiri Kinshi" (立ち入り禁止) (with Ado) | 2022 | Mafumafu Tribute Album – Tensei |
| "Hero" (featuring Hatsune Miku) | 2023 | Magical Mirai 2023: Official Album |

### Songwriting and production credits

All song credits are adapted from the Japanese Society for Rights of Authors, Composers and Publishers's database unless stated otherwise.
List of songs written by Ayase for other artists, showing year released, artist name, and name of the album :
| Song | Year | Artist | Album |
| "Evergreen" (エヴァーグリーン) | 2019 | Ryushen | Non-album single |
| "Inochi ga Naite Itanda" (命が泣いていたんだ) | 2020 | The Binary | Jiu |
| "Wanderer" (ワンダラー) | 2020 | Satomi | Non-album single |
| "Saikai" (再会) | 2020 | Lisa, Uru | Non-album single |
| "Sen'ya Ichiya" (千夜一夜) | 2020 | Hey! Say! JUMP | Fab!: Music Speaks |
| "Shout!" (シャウト!) | 2020 | TTJ | Non-album single |
| "Snow Dance" (スノウダンス) | 2021 | Genin wa Jibun ni Aru | Multiverse |
| "Never Ending" (ネバーエンディング) | 2021 | Shoose | Velvet Night |
| "Shinkai" (深海) | 2021 | Nana Mori | Non-album single |
| "Yuke" (往け) | 2021 | Lisa | Lander |
| "Alter Garden" (オルターガーデン) | 2021 | Regret (Arisa Kōri) | Caligula 2 Original Soundtrack |
| "Cinema" (シネマ) | 2021 | Vivid Bad Squad | "Rad Dogs" / "Cinema" |
| "Introduction" (イントロダクション) | 2022 | Poppin'Party | "Poppin'Dream" |
| "Kaimaku Zenoparade" (開幕ゼノパレード) | 2022 | Varis | Kakusei Historia |
| "Wonder Light" | 2022 | Idolish7 | Non-album single |
| "Michizure" (みちづれ) | 2023 | Hoshimachi Suisei | Specter |
| "Datsu Karitekita Neko Shōkōgun" (脱・借りてきた猫症候群) | 2023 | Uru | Contrast |
| "Michishirube" (道導) | 2023 | Masayuki Suzuki | Soul Navigation |
| "Four-Man Cell" (フォーマンセル) | 2023 | Top 4 (Kiyo, Retort, Ushizawa, Gatchman) | Non-album single |
| "Episode X" | 2024 | Ado | Ado's Best Adobum |