Final answer:
The melody that emerges one and a half minutes into the piece gets louder and more dissonant, indicating impending danger and causing audience tension.
Step-by-step explanation:
The melody that appears about one and a half minutes into the piece can be described as becoming louder and dissonant, causing a feeling of tension or unease in the listener. The increasing volume and dissonance in the chords are used effectively to convey a sense of danger as the heroine sees a man approaching her. This musical technique, leveraging dissonance and dynamics, is a common tool in film scores to influence the emotional response of the audience to the onscreen events.
The change in melody, from slow and mournful to one that swells with dissonance, helps to create a sense of anxiety and foreboding. In contrast, if the music had high and bright notes with a bouncy pace, it would likely produce feelings of happiness and positivity.