This document discusses different types of sound that can be used in films, including contrapuntal sound, parallel sound, diegetic sound, and non-diegetic sound. It provides examples of how the opening music of Jaws creates suspense using parallel sound, but how that suspense is transformed when different music is overlaid in a contrapuntal way. A variety of sound effects that could be used for a thriller genre film are also listed, including glass smashing, footsteps, and heartbeats. The document evaluates how sound is particularly important for thrillers to create emotions in viewers and illustrates actions through parallel sound or creates an eerie tone with contrapuntal sound.