Third (chord)

 ( Chord Factors ) 

In music, the third factor of a chord is the note or pitch two scale degrees above the root or tonality center. When the third is the bass note, or lowest note, of the expressed triad, the chord is in first inversion.

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Use Conventionally, the third is third in importance to the root and fifth, with the third in all (I, IV, V and i, iv, v) being either major or minor. In and theory, the third is required due to it determining chord quality.

The third in both major chord and is major (E in C) and the third in both minor chord and Diminished triad is minor (E in C).

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Tenth In music and music theory, a tenth is the note ten scale degrees from the root of a chord and also the interval between the root and the tenth.

Since there are only seven degrees in a diatonic scale the tenth degree is the same as the mediant and the interval of a tenth is a compound third.

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See also

• List of third intervals

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Notes

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Further reading

• William Duckworth (2025). 049509093X, Thomson Schirmer. . 049509093X
• Vincent Persichetti (1961). 9780393095395, W. W. Norton. . ISBN 9780393095395

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