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In
music Music is the arrangement of sound to create some combination of Musical form, form, harmony, melody, rhythm, or otherwise Musical expression, expressive content. Music is generally agreed to be a cultural universal that is present in all hum ...
, the third factor of a chord is the note or pitch two scale degrees above the
root In vascular plants, the roots are the plant organ, organs of a plant that are modified to provide anchorage for the plant and take in water and nutrients into the plant body, which allows plants to grow taller and faster. They are most often bel ...
or tonal center. When the third is the bass note, or lowest note, of the expressed triad, the chord is in first inversion.


Use

Conventionally, the third is third in importance to the root and fifth, with the third in all primary triads (I, IV, V and i, iv, v) being either major or minor. In jazz chords and theory, the third is required due to it determining chord quality. The third in both
major Major most commonly refers to: * Major (rank), a military rank * Academic major, an academic discipline to which an undergraduate student formally commits * People named Major, including given names, surnames, nicknames * Major and minor in musi ...
and
augmented chord An augmented triad is a chord (music), chord, made up of two major thirds (an augmented fifth). The term ''augmented triad'' arises from an augmented triad being considered a major chord whose top note (fifth) is raised. When using Chord names ...
s is major (E in C) and the third in both minor and diminished chords is minor (E in C).


Tenth

In music and
music theory Music theory is the study of theoretical frameworks for understanding the practices and possibilities of music. ''The Oxford Companion to Music'' describes three interrelated uses of the term "music theory": The first is the "Elements of music, ...
, 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 In music theory a diatonic scale is a heptatonic scale, heptatonic (seven-note) scale that includes five whole steps (whole tones) and two half steps (semitones) in each octave, in which the two half steps are separated from each other by eith ...
the tenth degree is the same as the mediant and the interval of a tenth is a compound third.


See also

*
List of third intervals Third interval may refer to one of the following musical intervals in equal-temperament tuning: *major third *minor third In music theory, a minor third is a interval (music), musical interval that encompasses three half steps, or semitones. ...


Notes


Further reading

* * {{Intervals Chord factors 3 (number)