Danuta Helena Siedzikówna (nom de guerre: Inka; underground name: Danuta Obuchowicz; 3 September 1928 – 28 August 1946) was a Polish medical orderly in the 4th Squadron of the 5th Wilno Brigade of the Home Army.[1] In 1946 she served with the Brigade's 1st Squadron in Poland's Pomerania region. Considered a national heroine, she was captured, tortured and sentenced to death at the age of 17 by the communist authorities.

12  LAST SOUND before war

Genre: Techno | Ambient | Industrial | Soundtrack
Location: UK / Poland
Services: Music Production • Live Performance • Video Game Soundtracks • Sound Design

Contact: techspec22@icloud.com
Biography
IronHertz447 is a techno and ambient-industrial producer whose sound fuses the melancholy of post-communist silence with the electrified pulse of the future. Born in Poland and forged through years of underground exploration, IronHertz447 builds raw sonic architecture that speaks of defiance, survival, and spiritual evolution. Initially introduced to the scene through a grassroots concept under the alias Techspec22, the artist honed their craft with limited gear but limitless drive. That phase served as the foundation. IronHertz447 is the transformation — a rebirth with sharpened sound, elevated vision, and full-spectrum production capability.
Driven by deep roots in analog culture and an obsession with dystopian aesthetics, IronHertz447 crafts music that resonates through the body and burns into the mind. From immersive soundscapes to dancefloor detonations, every track is a story of resistance, rhythm, and rebirth.
Artistic Vision





The name “IronHertz” symbolizes power and pulse.

“Iron” stands for strength, legacy, and inner fire.

“Hertz” reflects the frequency of sound, connection, and revolution.



Together, it becomes a signal — one that blends ambient sorrow with industrial rebellion, giving listeners a raw emotional charge.

Offerings
🎮 Video Game Music Production – Atmospheric, cinematic, and tension-driven scores for immersive gameplay
🎛️ Techno Live Shows – Electrifying live sets with modular energy and dark elegance, tailored for underground spaces or digital stages
🎚️ Sound Design Services – Original textures and beats crafted for visual media, installations, or collaborations
🎧 Custom Tracks – Commissioned works for labels, filmmakers, or artistic projects

Ambient depth meets techno aggression
Strong Polish cultural influence, evoking a post-industrial landscape
Music rooted in authenticity, never filtered, always felt
Ready for both club stages and conceptual sound exhibitions

Motto
“Same fire. Sharper edge. Heavier impact.”