Pitches and rhythms without harmony can be beautiful. However, once we add harmony to the mix, music becomes and infinitely colorful and detailed sound scape.
- Harmony: The “ rhythm.”
When notes or a chord or harmony sound simultaneously it can produce stability or tension. These two types of harmonies are referred to as:
Harmony that is stable, non active, agreeable, free of tension, blending and resolved.
Harmony that is unstable, in opposition, conflicting, jarring and unresolved. A dissonant chord leaves the listener with a feeling of expectation. It takes a consonant chord to complete the gesture created by a dissonance. Most good music has a combination of consonance and dissonance.
Harmonies move in progressions that help form the key of a piece. Each key is positioned around a tonic and harmony can be formed from the tonic note or any other scale degree. Harmonies can also help to change the key of a composition, when necessary. The processes of changing keys in music is called modulation. Harmony like scales can be major or minor and classical music uses those two primarily but eventually you will hear about or get to know diminished, half-diminished, augmented, dominant seventh and many more types of chords or harmonies.