Definition of Harmony
Harmony in music refers to the simultaneous combination of two or more pitches or notes to form chords and chord progressions. It provides the vertical structure in music, contrasting with melody, which is the horizontal sequence of notes. Harmony creates a sense of agreement or tension among sounds, enriching the overall musical texture.
Key Principles of Harmony
The core principles of harmony include consonance, where notes blend smoothly, and dissonance, which introduces tension resolved by consonance. Basic harmonic building blocks are triads (three-note chords) like major and minor chords, and more complex structures such as seventh chords. Harmonic progressions follow patterns, often guided by scales and keys, to maintain coherence.
Practical Example of Harmony
Consider a simple C major chord, formed by playing the notes C, E, and G together. In a song like 'Twinkle, Twinkle, Little Star,' the melody notes are supported by harmonic progressions such as C to G to C, where each chord accompanies a phrase, illustrating how harmony reinforces the tune and adds emotional depth.
Importance and Applications of Harmony
Harmony is essential in music composition as it evokes emotions, establishes tonality, and supports rhythmic and melodic elements. It is applied across genres, from classical symphonies where intricate progressions build drama, to pop music where simple chords drive accessibility, enabling musicians to convey complexity and unity in performances.