"The absence of music can also be very powerful when a scene contains a particularly frightening or beautiful soundscape. A fantastic example of this can be found amongst James Horner's Oscar winning score for Titanic. As the film builds to its climax, the soundtrack brims with orchestral music and a complex sound design. Audiences follow the ship's captain inside the water-filled bridge, where he stands awaiting his death. For a few precious moments, the music disappears, leaving only the sparse sounds of the creaking ship, dripping water and the character's heavy breathing. By hearing the sounds exactly as the doomed captain would have heard them, the scene becomes much more personal and emotive. When the music returns a few seconds later, accompanying the crashing of the sea through the bridge windows, it is all the more powerful for its absence." Source: [1].
Music that is used in films highlight onscreen action and emotions and gives scenes a sense of time and place. Sound effects can then be used to simulate reality or even add something that is not really there as to add a surreal affect to the visual. Both can be used to create expectations and moods, such moods can match the moving image or it can contrast it.
Sound designers sometimes select pre-existing music to accompany the moving image or they will compose, or hire someone to compose, new music. If we wanted to compose music for film a few useful tips are listed below to take lead from:
- To help give the film identity construct memorable melodies, themes and motifs.
- To intensify emotion and heighten tension consider using music more subtly, as to not draw any attention to the music.
- Change the tempo to change the viewer's heart rate and feelings of anxiety; to create a spark of apprehension or fear create a sudden change of tempo; to make the audience feel a sense of security slow down the tempo.
- To heighten tension/ conflict during a scene use complex and unresolved harmonies, such as clashing or dissonant harmonies or unsettling chords.
- Rumbling timpani, double basses and high, screeching violins can be used to create that horror movie atmosphere.
- To keep your audience on edge after heightening their tension use a progression of chords that do not resolve or has an imperfect ending. Do not finish on the tonic! In contrast, if you want the music to resolve use the tonic.
- The absence of music in parts of the film can sometimes be as effective as having it present! Having a quiet passage in a scene can create tension that forces the audience to concentrate and wait in anticipation for a sound to emerge.
- The music should always have a purpose for being present.
- For happy moments consider upbeat music.
- For sad moments consider very dim and dark music.
- You can confuse or mislead the audience with music and sound. You can do this intentionally to surprise the audience.
- To make you music sound authentic, realistic and appealing use ambient sounds or music.
- The volume, pitch and timbre define the overall sonic texture of a film.
- A melody or musical effect and musical properties such as pitch, volume and timbre can all be used to associate music to a character, setting, situation or idea.
Note: you can use the same music to create contrasting effects for different films. For example, the terrifying screechy violin used in Psycho (1960) have a more comic effect when used as background music when Mel Brooks is stabbed in the shower in High Anxiety (1977).