Each instrument has its own sound with its own special timbre
The timbre in music is basically what we hear, i.e. a specific mixture of fundamental tone, overtones, noise components, etc., as well as the temporal progression of the frequency spectrum and the volume. Each instrument has its own sound with its own special timbre. However, this can also be varied if, for example, you play a wind instrument with an accentuated low pitch or shrill pitch. Since each instrument has its own timbre, we can distinguish a piano from a trumpet, even if they both play the same note. An orchestra can also have a special timbre, depending on the instrumentation and how the conductor leads the different groups.
The timbre of an instrument is perceived subconsciously and on an emotional level. As a result, she has a high recognition value, such as the harmonica in "Play me the song of death". The range of the timbre is often underestimated. That's why it plays such a big role in film music. She creates the emotions for the pictures, the recognition value of characters and the right mood.
The tactile aspects of a sound are now considered an important element and are used more and more consciously. The interplay of music and atmosphere, sound effects and original sound are a fundamental element in every film. The better everything harmonises, the more pleasant it is for viewers and listeners. The dissolution of existing tonal structures with fixed tones and chords creates the important moments of surprise that accentuate the supporting scenes.