Gensai Hasegawa（長谷川 現斎） — Discography
Minimal Feedback / Structural Noise / Technoise - last updated, 6-Jun-2026
Experimental / Noise Sound Artist in Tokyo.
Harsh textures, live improvisation, and electroacoustic intensity.
Featured on Media & Zine
- The Wire (Adventures In Sound And Music, Sep 11 & 18 2025)
- DORK (Apl 2026)
- Avant Music News (This is Darkness Playlist – October 2025)
Special
- The Unstructurized Sea split with T. Mikawa(incapacitants), released by Noise Margin(Czech Republic), 2026, Split/Digital/CD
- *GENSAI HASEGAWA / R D K P L* curated by RDKPL (Czech Republic), 2025, Split/Digital
Solo Album
- *Memory Rebellion* MiMi Records(Portugal) , 2026, Digital
- *The Non-Existent Choir* Noise Margin(Czech Republic) , 2025, Digital
- *Night Landscape* Hamfuggi (Argentina), 2025, Digital
- *The Technoise For A Room #1*, Falt (France), 2025, Digital
- *Life and Death in the Quarantines*, Inner Demons Records (USA), 2025, Digital
- Link
Split/Compilation/Collaboration
- *SEIEI JACK / GENSAI HASEGAWA / SAD TORTOISE / RDKPL* Curated by RDKPL (Czech Republic) , 2025, Split/Digital
- *HARSH NOISE KOMP8* Curated by RDKPL (Czech Republic), 2025, Compilation /Digital
- *CONTAMINACION SONORA - ALL THE ARTISTS IN THE WORLD* Curated by La Madriguera Del Tlacuache (Mexico), 2025, Compilation /Digital
- *Experimental Session #3, Gensai Hasegawa and KPC, Tokyo, Japan, Jan 2026*, Inner Demons Records (USA), 2026, Digital
- *Experimental Session #2 – Gensai Hasegawa & KPC a.k.a. kassn (Tokyo, Sep 2025)*, Inner Demons Records (USA), 2025, Digital
- *Experimental Session #1 – Gensai Hasegawa & KPC a.k.a. kassn (Tokyo, June 2025)*, Inner Demons Records (USA), 2025, Digital
- *SPLIT Gensai Hasegawa - Juanito)))* Hamfuggi (Argentina), 2025, Split/Digital
- *Sounds for Jon Shuemaker* Curated by Nead D Retke(Toronto, Ontario), 2025, V/A : Various Artists/Digital
- *鋼の塔 (Torre de Acero)* - Esteban Tenedor(Costa Rica) & Gensai Hasegawa, Hamfuggi (Argentina), 2026, Split/Digital
Upcoming (2026)
New releases and split projects in progress (to be announced).
Further performances and collaborations will be added as details become clearer.
Bio
Gensai Hasegawa is a Japanese experimental noise artist based in Tokyo.After a long career as a systems engineer, he began producing music at the age of 50, bringing a unique perspective shaped by structure, logic, and disruption.His work explores density, rupture, texture, and live improvisation.
Moving between harsh noise and electroacoustic expression, he develops performances focused on immediacy, instability, and sonic intensity.