We have started mail-order sales for the CD editions of the recently announced Hello1103 Cobalt and yk (Hello1103) In the Hollow Room.
Be sure to check out the latest Hello1103-related releases.
Buy CD Edition
*Pre-orders will be available until May 29. A digital download edition is also scheduled to go on sale the same day.
We’re excited to be performing at “CHERRY MUSIC CPH 2026” in Copenhagen, Denmark!
“CHERRY MUSIC CPH 2026”
Hello1103 (JP)
tatata5 (JP)
Lars Kivig
LI////MOTORSaw
Liminality Interludes
Fredag 24. april 2026
Støberiet, Blågårds Plads 5
“CHERRY MUSIC FESTIVAL FREDERIKSBERG 2026”
25 April
Hello1103 (JP)
tatata5 (JP)
KILOTON
LI////MOTORSAW
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To dage med ny elektronisk musik og modular performances.
Koncerter på to venues med kunstnere fra Japan og Danmark.
—
Lørdag: Frederiksberg Country Club
Søndag: Væksthuset, Landbohøjskolen
We’re excited to announce two new releases from Hello1103 for M3 2026 Spring on 2026.4.26. We’ll be waiting for you at Tokyo Ryutsu Center (Booth A-08ab).
Note: Hello1103 members will not be present due to Denmark tour so our booth will be managed by Hayase (MY FUNERAL INC.) and Momose Yasunaga.
“Cobalt” by Hello1103
This is a personal work that portrays everyday life through a lyrical soundscape.
[Tracklist]
1. さざめき (Whispering)
2. 溜息 (Hush)
3. 空砲 (Inner Detonation)
4. コバルトの泡沫 (Dissolving Cobalt)
5. くもり空に微笑む (Smiling at the Gloomy Sky)
CD & Digital Download ¥2,000
“In the Hollow Room” by yk (Hello1103)
A collection of music created for machina’s solo exhibition “Hollow Room”
[Tracklist]
1. Anemone
2. Candlelight
3. Petals Chatting
4. Interlude – Pendulum and Butterfly
5. Memories of the Doll
6. Twelve Nights Sketches
7. Hollow Room
8. Goodnight
Cover art : machina 「No One Knows」
CD & Digital Download ¥2,000
yk (Hello1103) will officially release “In the Hollow Room,” a collection of music created for machina’s solo exhibition “Hollow Room” on 2026.4.26. The release will be available starting at M3 2026 Spring (Booth: A-08ab).
This work originally served as the soundtrack for the exhibition held last year at “gallery hydrangea” in Hikifune, Tokyo.
That serene and beautiful exhibition space disappeared along with the end of the show, but this album was created to preserve fragments of it in sound.
Dedicated to the girls in those paintings—fleeting, yet dignified.（yk）
In the Hollow Room / yk (Hello1103)
[Tracklist]
1. Anemone
2. Candlelight
3. Petals Chatting
4. Interlude – Pendulum and Butterfly
5. Memories of the Doll
6. Twelve Nights Sketches
7. Hollow Room
8. Goodnight
Cover art : machina 「No One Knows」
All songs, Vocal, Classic guitar, Synth by yk (Hello1103)
Mix & Master : Katsuhiro Hitomi
Tr1,2,4-8 yk
Tr3 Katsuhiro Hitomi
Design / Movie : yukako (Hello1103)
yk (Hello1103)
https://linktr.ee/yk_hello1103
Hello1103 will release their new EP “Cobalt” on 2026.5.29.
This is a personal work that portrays everyday life through a lyrical soundscape.
[Tracklist]
1. Whispering
2. Hush
3. Inner Detonation
4. Dissolving Cobalt
5. Smiling at the Gloomy Sky
All songs by Hello1103
Katsuhiro Hitomi : Compose / Arrange / Modular Synth
yk: Vocal / Classic Guitar
Mix & Mastering : Katsuhiro Hitomi
Artwork & Movie : yukako (Hello1103)
Piano (Tr.4) : Wataru Sato
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To celebrate the release of “Cobalt,” we will hold our first solo concert.
Venue: Wildside Tokyo
Date: 2026.5.29
Open: 19:00 / Start: 19:30
Act: Hello1103
O.A.: yk (Hello1103)
Tickets:
Adv ¥3,500
Door ¥4,000
Premium Ticket ¥5,000
U-25 ¥2,500
Details: https://cobalt.peatix.com
world’s end girlfriend’s new EP “Helix of Frequency, Phenomenon of Love and Void” was released on streaming platforms on March 21. A remix of “Happiness,” originally by Hello1103, is included as track 3 under the title “Happiness (Hidden Halo)”. This is a different version from one included on “Billion Aspects.”
It branches into a different worldline…definitely give it a listen.
world’s end girlfriend
“Helix of Frequency, Phenomenon of Love and Void EP”
M1: Helix of Frequency, Phenomenon of Love and Void feat. Jessica
M2: Sweet Suicide (Syndrome) with samayuzame
M3: Happiness (Hidden Halo)with Hello1103
yk’s work “Kakuriyo” is a Japanese horror–inspired dark ambient piece that sonically depicts a near-death experience. It was originally released on cassette tape in December 2024 via the horror label Kikizte.
Though it had only been available in cassette format until now, it has been remastered and will be released on various streaming platforms through our independent label, GoodDog Records.
On the cassette version, the A-side was labeled simply as “Kakuriyo” and the B-side as “Kanokishi.” For streaming distribution, the work has been divided into 13 tracks.
The A-side “Kakuriyo” corresponds to tracks “Corrosion” through “Kakuriyo,” while the B-side “Higan” corresponds to “The Border” through “Sea of Mourning.”
The cassette edition is still available via Kikizte.
A special version is also offered, which includes incense inspired by the music, created by Yurasu Kaori and Mamiko Imai. Be sure to check it out.
—
Kakuriyo / yk (Hello1103)
[Tracklist]
1. Corrosion
2. Confinement
3. Traces
4. The Ghost
5. The Riverbank
6. Kakuriyo
7. The Border
8. Oblivion
9. Song from Beyond
10. Obstacle
11. Eternal Night
12. The Encounter
13. Sea of Mourning
Vo. / Synth / other : yk (Hello1103)
Mix & Master : Katsuhiro Hitomi
Artwork & Trailer : yukako (Hello1103)
Special Thanks : Kikizte / Mamiko Imai
Hello1103 has contributed to the compilation “NISHIKI vol.1”, organized by the newly established Tokyo label “Hasshiki.” The track “Wavefolder,” featured as the second track, is a brand new track written specifically for this release.
HASSIKI / NISHIKI vol.1
1. Ozouni / Yukai
2. Hello1103 / Wavefolder
3. Shotaro Hirata / Hub
4. Hybrid Leisureland / Hope of day〔Hidetoshi Koizumi 4beat mix〕
5. Kotaro Horiguchi / meltdown
6. Z hyper / Wannabe
7. moistpeace / AI think about GLSL
8. OREO SALT / NEW LIQUID
9. Hybrid Leisureland / Again and again（feat. Risa Okada）
10. tatata5 / peacock blue
Listen on Spotify / Apple Music
Buy at Bandcamp (digital download)
See Details
Hello1103 will hold their very first solo concert to celebrate the release of the new EP “Cobalt”.
Venue: WildsideTokyo Shinjuku
Date: 2026.5.29 (Fri)
Open 19:00 / Start 19:30
Act:Hello1103
O.A: yk (Hello1103)
Tickets:
Adv. ¥3,500
Door ¥4,000
Premium Ticket ¥5,000
U-25 Adv. ¥2,500
At Gallery Hydrangea, yk (Hello1103) will be in charge of the in-gallery BGM for machina’s solo exhibition “Hollow Room.”
All tracks were newly composed specifically for this exhibition, inspired by machina’s artwork.
A CD containing the music will also be sold at the gallery.
Exhibition dates: 2025.12.18 (Thu) – 12.22 (Mon)
Hours: 13:00 – 18:30 (until 17:00 on the final day)
Venue: gallery hydrangea (Tokyo, Hikifune)
Music: yk (Hello1103)
Admission free
Details