Minor chord

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minor triad
Component intervals from root
perfect fifth
minor third
Minor chord on C About this sound play .

In music theory, a minor chord (About this sound play D minor chord ) is a chord having a root, a minor third, and a perfect fifth.[1] When a chord has these three notes alone, it is called a minor triad. Some minor triads with additional notes, such as the minor seventh chord, may also be called minor chords.

A minor triad can also be described as a minor third interval with a major third interval on top or as a root note, a note 3 semitones higher than the root, and a note 7 semitones higher than the root. Hence it can be represented by the integer notation {0, 3, 7}.

A major chord (About this sound play ) differs from a minor chord in having a major third above the root instead of a minor third. It can also be described as a major third with a minor third on top, in contrast to a minor chord, which has a minor third with a major third on top. They both contain fifths, because a major third (4 semitones) plus a minor third (3 semitones) equals a fifth (7 semitones).

A diminished chord is a minor chord with a lowered fifth. About this sound play

An example of a minor chord is the C minor chord, which consists of the notes C (root), E (minor third) and G (perfect fifth):

About this sound Play C minor chord in root position .
An A minor chord (consisting of notes A, C, E) in its root position, first inversion, and second inversion, respectively About this sound Play A minor chord and inversions

The minor chord, along with the major chord, is one of the basic building blocks of tonal music and the common practice period. In Western music, a minor chord, in comparison, "sounds darker than a major chord"[2] but is still considered highly consonant, stable, or as not requiring resolution.

Acoustic consonance of the minor chord

A unique particularity of the minor chord is that this is the only chord of three notes, in which the three notes have one harmonic - hearable and with a not too high row - in common (more or less exactly, depending on the tuning system used) : This harmonic, common to the three notes, is situated 2 octaves above the high note of the chord : This is the harmonic of row 6 of the fondamental of the chord, the one of row 5 of middle note, the one of row 4 of the high note:

In the exemple do, mi\flat, sol : a sol, 2 octaves above.

Demonstration :

  • Minor third = 6/5 = 12/10
  • Major third = 5/4 = 15/12
  • So the ratios of Minor chord : 10:12:15
  • And the explication of the unique harmonic in common, between the three notes, is verified by : 10*6 = 12*5 = 15*4

Just intonation

In just intonation, a minor chord is often (but not exclusively) tuned in the frequency ratio 10:12:15 (About this sound play ). In 12-TET, or twelve-tone equal temperament (now the most common tuning system in the West), a minor chord has 3 semitones between the root and third, 4 between the third and fifth, and 7 between the root and fifth. It is represented by the integer notation 0,3,7. The 12-TET fifth (700 cents) is only two cents narrower than the just perfect fifth (3:2, 701.9 cents), but the 12-TET minor third (300 cents) is noticeably (about 16 cents) narrower than the just minor third (6:5, 315.6 cents). The 12-TET minor third (300 cents) more closely approximates the 19-limit (Limit (music)) minor third 16:19 About this sound Play (297.5 cents, the nineteenth harmonic) with only 2 cents error.[3] Ellis proposes that the conflict between mathematicians and physicists on one hand and practicing musicians on the other regarding the supposed inferiority of the minor chord and scale to the major may be explained due to physicists' comparison of just minor and major triads, in which case minor comes out the loser, versus the musicians' comparison of the equal tempered triads, in which case minor comes out the winner since the ET major third is 14 cents sharp from the just major third while the ET minor third closely approximates the consonant 19:16 minor third which many find pleasing[4]. Other just minor chord tunings include 12:14:18 About this sound Play (Septimal minor third), and 16:19:24 About this sound Play . More tunings of the minor chord are also available in various equal temperaments other than 12-TET.

Minor chord table

Chord Root Minor Third Perfect Fifth
Cm C E G
Cm C E G
Dm D F (E) A
Dm D F A
Dm D F A
Em E G B
Em E G B
Fm F A C
Fm F A C
Gm G Bdouble flat (A) D
Gm G B D
Gm G B D
Am A C (B) E
Am A C E
Am A C E (F)
Bm B D F
Bm B D F

See also


  1. ^ Miller, Michael. The Complete Idiot's Guide to Music Theory, 2nd ed, p. 114. [Indianapolis, IN]: Alpha, 2005. ISBN 1592574378.
  2. ^ Kamien, Roger (2008). Music: An Appreciation, 6th Brief Edition, p.46. ISBN 978-0-07-340134-8.
  3. ^ Alexander J. Ellis (translating Hermann Helmholtz): On the Sensations of Tone as a Physiological Basis for the Theory of Music, page 455. Dover Publications, Inc., New York, 1954.
  4. ^ Ellis (1954), p.298. In the 16th through 18th centuries, prior to 12-TET, the minor third in meantone temperament was 310 cents About this sound Play and much rougher than the 300 cent ET minor third.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Minor chord". Allthough most Wikipedia articles provide accurate information accuracy can not be guaranteed.

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