Why is 16/9 used for the minor seventh instead of 7/4?



Asked by: Ruth Williams

Why is it called A minor 7th?





In music theory, a minor seventh is one of two musical intervals that span seven staff positions. It is minor because it is the smaller of the two sevenths, spanning ten semitones. The major seventh spans eleven.

Is dominant 7th the same as minor 7th?

While the dominant seventh chord is typically built on the fifth (or dominant) degree of a major scale, the minor seventh chord is built on the second, third, or sixth degree. A minor seventh chord contains the same notes as an added sixth chord.

What is the ratio of A minor 7th?

7:4 ratio

The harmonic seventh interval, also known as the septimal minor seventh, or subminor seventh, is one with an exact 7:4 ratio (about 969 cents).

How do you know if a seventh is major or minor?





Ab – G is the major seventh. When combined, they form an Ab major seventh chord: Ab – C – Eb – G. A minor triad and a minor seventh combine to form a minor seventh chord (m7). Minor seventh chords are abbreviated with a lower-case ‘m’ and a 7.

Why is the 7th chord diminished?

The diminished 7th chord is used in a similar way in minor keys, typically to create more tension over the 5 chord. In the key of A minor for example, E7 would be our dominant chord, based on the harmonic minor scale.

Is A minor 7th the same as a major 6th?

Summarily, the first inversion of the A minor seventh chord has exactly the same spelling as the C major sixth chord, while the third inversion of the C major sixth chord has the same spelling as the A minor seventh chord.

Why do 7th chords sound so good?

The chord is made up of the 1st, 3rd, 5th and 7th notes of a major scale, so Cmaj7 has C, E, G and B notes. The dissonance between the C and the B is what makes the chord sound so lush, but make sure you keep the 1st and the 7th notes apart.

What’s the difference between dominant 7th and major 7th?

A major 7th chord is formed by playing the root (1st) + 3rd + 5th + 7th notes of a major scale. A dominant 7th is formed by simply lowering the 7th note a half step. As an example, Cmaj7 = C – E – G – B (7th note). Lower the 7th note a half step, from B to Bb, thus Dominant 7th = C – E – G – Bb.



What is the difference between C7 and Cmaj7?

The main notable difference between C7, Cmaj7 and Cmin7 is the quality of the chords. C7 is a dominant 7th, which is built using a major chord, adding a flat 7 (or minor 7). Cmaj7 is a major chord with a major 7. Cmin7 is a minor chord with a minor 7.

What is the difference between a 7 chord and a major 7 chord?

The difference is the kind of 7 you use. A “regular” G7 (also called a “dominant seventh” chord) is a G-major chord with the minor seventh added, so it’s G B D F. A “Gmaj7” or “GM7” is a G-major chord with the major seventh added, so it’s G B D F#.

What is the difference between a minor 7th and a diminished 7th?

The half diminished chord (m7b5) has a minor seventh (7) – it’s a m7 chord wth a flat five (b5). The diminished chord has a diminished seventh (dim7, °7). The minor 7th is again decreased by a semitone and hence is equivalent to a sixth (6) – only the theoretical approach is different.



Is a dominant 7th chord major or minor?

Formation of dominant seventh chords
With respect to the root, all dominant seventh chords consist of a major third (dominant-leading note), a perfect fifth (dominant-supertonic) and minor seventh (dominant-subdominant). This means that all dominant seventh chords are major chords, regardless of the key.

Why is it called a dominant 7th chord?

The reason behind its name “dominant seventh chord” is because, in a C7 chord, the B flat is the 7th note of the C dominant scale (also known as the Mixolydian scale). This contrast with the regular major 7th found on a Cmaj7 (which is the note B natural).

What is the purpose of diminished chords?

Diminished chords inject a sense of drama, tension, and suspense into music. They also have a distinct timbre that sounds dark, dissonant, and eerie. Their oddness makes them unique! However, the flattened fifth makes diminished chords sound unstable and creates a desire for tonal resolution.

What is the most common chord progression?

The I–V–vi–IV progression is a common chord progression popular across several genres of music. It involves the I, V, vi, and IV chords of any particular musical scale. For example, in the key of C major, this progression would be: C–G–Am–F.



Are diminished chords always minor?

Diminished chords are not a variety of minor chord; the two types are entirely separate entities. The types of chords you’re practicing are defined as being made up of as combinations of major thirds and minor thirds. Triads – three-note chords – each contain two such intervals.