The document discusses sound design choices for an opening film sequence. The opening contained no dialogue or non-diegetic sounds, relying only on sounds from within the scene. The only added sound was the song "Radioactive" by Imagine Dragons, for which permission was obtained. Typical sounds used in thriller films are described as suspenseful music, footsteps, and heavy breathing, often created using strings, drums, and synthesizers. Such sounds aim to generate suspense and tension in audiences by making them feel scared. Common thriller sounds have a dark, eerie quality, with music that starts slow and speeds up to build tension and climax.