What is the primary purpose of background or incidental music in a dramatic scene?

The primary purpose of background or incidental music in a dramatic scene is to underscore the mood. This type of music serves to enhance the emotional impact of the scene, helping to convey the intended feelings and themes to the audience without overshadowing the dialogue or action. By creating an appropriate atmosphere, incidental music can evoke certain emotions, such as tension, sadness, joy, or suspense, thus supporting the narrative and guiding the audience's response to what they are watching. This subtle enhancement enriches the viewing experience and helps to establish a deeper connection between the audience and the characters or events unfolding on screen.