Minor chord

minor triad

Component intervals from root

perfect fifth

minor third

root

Tuning

10:12:15[1]

Forte no. / Complement

3-11 / 9-11

Minor chord on C  play (help·info).

In music theory, a minor chord ( play D minor chord (help·info)) is a chord having a root, a minor third, and a perfect fifth.[2] 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.

Minor and major third in a minor chord: minor third on bottom, major third on top  Play (help·info).

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 ( play (help·info)) 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.  play (help·info)
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):

 Play C minor chord in root position (help·info).

An A minor chord (consisting of notes A, C, E) in its root position, first inversion, and second inversion, respectively  Play A minor chord and inversions (help·info)

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”[3] but is still considered highly consonant, stable, or as not requiring resolution.
Acoustic consonance of the minor chord[edit]
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 harm
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