Triad

In tonal harmony, a triad is a Accord of three notes in a fundamental state, and whose fifth is right. The triad is frequently confused with the agreement of three notes. However, if the preceding definition strictly is respected, there exist only two species of triad: the major triad and the minor triad.

• a agreement reversed is not any more one triad: at most, will be able one to call it “inversion of a triad” - for example: ground, C, semi .

• an agreement whose fifth is not right is not either a triad: it will act, either of a agreement of decreased fifth - for example, C, mi$\backslash \; flat$, sol$\backslash \; flat$ -, or of a agreement of increased fifth - for example: C, semi, sol$\backslash \; sharp$ .

Major triad

The major triad is composed of a fundamental , a third major and a perfect fifth.

For example: C, semi, ground .

• One finds the triad major on Ier, IIIe and Ve degrees of the major range, on Ve and VIe degrees of the harmonic minor range, and on IIIe, VIe and VIIe degrees of the natural minor range.

Minor triad

The minor triad is composed of a fundamental , a minor third and a perfect fifth.

For example: C, mi$\backslash \; flat$, ground .

• One finds the triad minor on the IE, IIIe and Ve degrees of the major range, on Ier and IVe degrees of the harmonic minor range, and on Ier, IVe and Ve degrees of the natural minor range.

See too

Internal bonds

• Agreement

• fundamental Agreement of fifth
• Agreement of three notes
• elementary tonal Harmony
• Musical theory

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