Atrium Carceri is a Swedish musical project by Simon Heath. Atrium Carceri's albums incorporate cinematic themes that help make the sound that much more haunting. The perfect soundtracks to untold horror movies. His six full-length albums have been released by industrial record label Cold Meat Industry.

Atrium Carceri is typically described as dark ambient and industrial ambient music. Similar to projects like Lull and Lustmord, Atrium Carceri uses synthesizers, sound effects, samples from films and anime, piano and other instrumentation to create "slow rhythms, bitter melodies and complex textures" generally based on themes of desolation, loneliness (especially solitary confinement) and environmental decay.

Atrium Carceri has been praised by music critics and embraced by a cult audience for its depth of atmosphere. As described by one reviewer, "Heath creates a world where time collapses, where the ancient world of conjured spirits, the physical limitations of being all too human, and the infinite outreach of potential futuretech, all coexist."

The project name, "Atrium Carceri", means "prison hall" in Latin - however, "carceri" is in the wrong case. The proper name would've been "Atrium Carceris".

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