Major chord

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major triad
Component intervals
root
major third
perfect fifth

Generally speaking, a major chord is any chord which has a major third above its root, as opposed to a minor chord which has a minor third. More specifically, it is the three-note chord made up of a major third and perfect fifth above the root—if the root of the chord is C, the chord will consist of the notes C, E and G. This is also known as a major triad.

Image:Major chord root and inversions.PNG

Pictured here is a major chord in its root position, first inversion, and second inversion, respectively.

The minor chord resembles the major chord except that it has a minor third with a major third on top, while a major chord has a major third with a minor third on top.

A major chord in just intonation is tuned to the frequency ratio 6:5:4, while in equal temperament it has 3 semitones between the third and fifth, 4 between the root and third, and 7 between the root and fifth. It is represented by the integer notation 0,4,7. In equal temperament, the fifth is only two cents narrower than the just perfect fifth, but the major third is noticeably different at 13.686 wider.

The major chord may be considered the building block of tonal music and the common practice period. It is considered consonant, or stable. The augmented chord is a major chord with a raised fifth.

[edit] See also


Chords

By Type Triads Major · Minor · Augmented · Diminished

Sevenths Major · Minor · Dominant · Diminished · Half-diminished · Minor-Major · Augmented major · Augmented minor

Extended Ninth · Eleventh · Thirteenth

Other Sixth · Augmented sixth · Suspended · Altered · Added tone · Polychord · Quartal and quintal · Tone cluster

By Function Diatonic Tonic · Dominant · Subdominant · Submediant

Altered   Borrowed · Neopolitan sixth · Secondary dominant · Secondary subdominant

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