Dominant Substitution: A technique in music theory where a chord substitutes the dominant chord, often using a tritone substitution, to create harmonic variation.

Context and Significance

Dominant substitution is a pivotal concept in jazz and contemporary music, allowing musicians to introduce harmonic diversity and unexpected resolutions. It is most commonly employed in jazz improvisation and composition to enrich chord progressions by replacing the dominant chord with another that shares the same tritone interval. This technique adds complexity and sophistication to musical arrangements, providing a fresh harmonic palette that can surprise and engage listeners.

Historical Background

The concept of dominant substitution has its roots in early 20th-century jazz, where musicians sought creative ways to enhance standard chord progressions. As jazz evolved, the use of tritone substitutions became a hallmark of the genre, defining the sound of bebop and modern jazz. This technique has since permeated other genres, influencing various music styles with its distinctive harmonic color.

Examples

A classic example of dominant substitution is in the jazz standard “Autumn Leaves,” where the V7 chord is frequently substituted with a tritone substitution to create smoother voice leading. Similarly, in the works of Thelonious Monk, dominant substitutions add a unique harmonic texture that characterizes his compositions. These substitutions are integral to jazz improvisation, offering musicians opportunities for artistic expression and exploration of new harmonic territories.

Related Terms

Tritone Substitution: Replacing a dominant chord with a chord a tritone away.

Chord Progression: A sequence of chords in a piece of music.

Harmonic Resolution: The movement from dissonance to consonance.

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