Copyright © 2000-2005, Ricci Adams
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d7
m7
M7
Major Triad
Minor Triad
Diminished Triad
Seventh Chords
A seventh chord is the combination of a triad and an interval of a seventh.
Five types of seventh chords are commonly used.
When a major triad and a minor seventh combine, a dominant seventh chord results.
listen to a C dominant seventh chord.
When a major triad and a major seventh combine, a major seventh chord results.
Listen to a C major seventh chord.
When a minor triad and a minor seventh combine, a minor seventh chord results.
Listen to a C minor seventh chord.
When a diminished triad and a diminished seventh combine, a fully-diminished seventh chord results. It is sometimes just called a diminished seventh chord.
Listen to a C fully-diminished seventh chord.
Finally, when a diminished triad and a minor seventh combine, a half-diminished seventh chord results.
Listen to a C half-diminished seventh chord.