Atrium Carceri is a music project created by Swedish composer Simon Heath. Known for its dark ambient soundscapes, the project blends atmospheric textures with haunting melodies, often evoking feelings of isolation and introspection. The music of Atrium Carceri frequently incorporates field recordings and cinematic elements, creating immersive auditory experiences. The project has released several albums, each exploring themes of memory, dreams, and the subconscious, making it popular among fans of ambient and experimental music.