This document discusses different types of sounds that are commonly used in film openings, including music, silence, diegetic/non-diegetic sounds, theme music, and dialogue/voiceovers. Music is often used to set the mood of a film, with tense music for horror and happy music for comedy. Some films feature diegetic sounds that become non-diegetic, like a typewriter sound in Atonement. Theme music can establish mood and era, like the western theme indicating the 1880s setting. Voiceovers are also used to connect audiences with characters' thoughts and feelings.