Harmony is one of the most complex sciences in music. Nevertheless, its elements begin to be studied at an early stage of the musician’s professional training - in a music school as part of solfeggio lessons. Those who receive education in a secondary special or higher educational institution get acquainted with science in more detail. The knowledge of pupils of the Children's Art School and Children's Music School is more often limited to triads, dominantseccord and their appeals. Introductory and second seventh chords are also played. What is dominantseccord?
Chords, their classification
A chord (of a classical structure) is a consonance consisting of more than three sounds, which are located along the thirds.
If there are 3 sounds in a chord, then it is called a triad, in this case the chord can have 2 hits - a sextax chord and a quarter-chord.
If there are 4 sounds in a chord, then it is called a seventh chord. Seventh Chord Appeals 3. To understand what it depends on, you need to know what the appeal is. Most often in a music school they teach that this is the transfer of the lower sound of the chord an octave up. This definition is not entirely accurate, because is a way to get a chord appeal. The correct definition will be the following option: appeal - this type of chord, where the foundation is any tone except prima.
To understand the entire volume, you should also know what the sounds of chords are called. The bottom sound is prima (or main tone), the second is third, the third is fifth, and the last, fourth is septima.
The appearances of any seventh chord are called: quintsextaccord (in bass - third), terzquat chord (in bass - fifth), second chord (based on septime).
Depending on the structure, there are 7 types of seventh chords: small major, minor minor, small reduced, reduced, large major, large minor, large increased. The names are determined by the interval that the extreme sounds form: small, diminished, or large septims - and a triad that is built from the main tone: major, minor, increased or decreased.
What is dominantseccord?
Dominantseccord and tonality
Dominantseccord is a minor major seventh chord, which is built on the fifth level of the fret. It is designated D 7.
Due to its location, the chord acquires a dominant function - a value in harmony (3 functions in total: tonic, subdominant, dominant) and the structure corresponding to the minor major seventh chord. The chord includes the following steps: V, VII, II, IV. As you know, at the V stage of major and harmonic minor a major triad (dominant) is built, and between the V and IV steps of the fret an interval of small septima is formed. Otherwise, the structure of D 7 : b3 + m3 + m3.
Dominantseccord and its appeals and permissions acquire an important role in tonality. This is one of the most unstable chords with a rather vivid gravity in the tonic. When modulating (moving to a new key), dominantseccord is most conveniently used in cadences (final turns) for greater stability of the tonic.
Appeals of dominant Septaccord in all keys, their resolution
Like any seventh chord, dominant has 3 references:
| Title of appeal | Designation | The stage on which to build | Structure | Resolution |
| Dominant Quintsextaccord | D6 5 | VII | Mind 5 3 + B2 m3 + m3 + b2 | T 5 3 (double 1) |
| Dominant Terzquart Chord | D 4 3 | II | m3 + b2 + b3 | T 5 3 (developed) |
| Dominant second chord | D 2 | IV | B2 + B 5 3 B2 + B3 + M3 | T 6 (double 1) |
T 5 3 - tonic triad, T 6 - tonic sextacord. double 1 - prima doubling in a triad or sextacord. Let's see how it looks in keys.
Examples of the construction of dominant septic chord and its appeals in major sharp keys.
Examples of construction in major flat keys.
Examples of the construction of the dominant Septaccord and its appeals in minor sharp keys.
Examples of construction in minor flat keys.
Special types of dominantseccord, other resolution options
It is interesting that dominantseccord can be resolved not only into tonic triad, but also into VI triad. In major, it will be minor, and minor - major. Such a turn is called interrupted.
Also, the dominant ceccord can be with the sixth - in this case, instead of the fifth (second stage of the fret), the sixth (third level of the fret) appears, often in the upper voice. The turn with such a chord sounds especially expressively in the minor, since D7 includes a consonance enharmonically equal to an increased triad.
In major, an altered dominant-chord with a lowered or increased fifth can be possible, and in a minor - only with a reduced fifth. In this case, the chord takes on a tense character.
Dominantseccord and its appeals play an important role in music. Therefore, it is good to understand its structure, resolution and not be lazy to sing it in solfeggio lessons.