Seventh Chords: Adding Color to the Harmony

A triad is a three-note chord. Add one more note — a seventh above the root — and you enter the world of seventh chords: richer, more complex, and more harmonically ambiguous than any triad. The fifth family of seventh chords is defined by the quality of the triad on the bottom and the quality of the seventh on top. A major seventh chord stacks a major seventh on top of a major triad — stable, lush, and associated with tonal rest in jazz and bossa nova. A dominant seventh chord places a minor seventh on top of a major triad — this is the V7 chord, the most harmonically active and directional chord in Western music, the chord that demands resolution more urgently than any other.

The minor seventh chord — minor triad plus minor seventh — is the most common chord in jazz, appearing on the second and third scale degrees of the major key and throughout the harmonic minor system. The half diminished seventh chord, also written as a minor seventh flat five, combines a diminished triad with a minor seventh — it is tense but not quite as extreme as the fully diminished seventh chord, which stacks a diminished triad with a diminished seventh and produces a chord that is symmetrical (three stacked minor thirds) and therefore capable of resolving convincingly to four different tonal centers. Each of these chords has a distinct character and a distinct role in the harmonic system.

In the world of jazz and commercial music, seventh chords are the baseline — the starting point, not the destination. Extensions built above the seventh — ninths, elevenths, thirteenths — add further layers of color and complexity. The add9 chord, which places the ninth of the chord in the middle of the voicing, appears in countless popular songs of the last century. The major sixth chord and minor sixth chord add a stable, resonant color to tonic harmonies. All of these options exist not to complicate music but to expand the range of emotional and sonic possibilities available to the composer and improviser. Harmony is a palette, and the more colors you have, the more precisely you can paint.

Fundamentals of Music: A Modern Approach is the perfect introductory music workbook for high school and college students, delivering a fresh comprehensive approach to music fundamentals. The textbook features fourteen detailed chapters, innovative tools, activities, worksheets, an index and a glossary. By infusing musical content with his rich experience in the popular, jazz, and commercial music industry, Professor Richard N. Kahn effectively bridges the divide between classical music pedagogy and jazz and commercial techniques. In this way, Fundamentals of Music: A Modern Approach provides even-handed coverage of a wide variety of musical styles, from Medieval to Motown.

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