Dominant

See also: dominant Transmission

In the tonal music, the dominant indicates the fifth degree of a range.

  • Whatever the mode - major range or minor range - this degree is always located a perfect fifth above the principal degree, the tonic , that is to say, a perfect fourth below, in accordance with the rule of the inversions.

For example, the note ground is dominant ranges of major C and C minor .

Harmonic and tonal function

In traditional harmony, the dominant one is one of the three “degrees principal” - or “better degrees” - tonality, the two others being: the tonic and the Sub-dominant. This degree fulfills the “tonal function of dominant”, which consists in producing the agreement of dominant of the tonality. It is thus, after the tonic, the most important degree of a tonality: tonic and dominant are regarded besides as two poles whose force of opposition/attraction constitutes the “angular stone of the tonal harmony”.

  • the agreement builds on this Ve degree - known as “agreement of dominant” - plays a key role within the tonal Système, in particular in the rates and the modulations.

For example, the agreement of dominant precedes usually the agreement by tonic at the end of a piece.

Preparatory agreement

A preparatory agreement is an agreement making it possible to bring in an optimal way, the agreement of dominant, in a gives rhythm, or in a unspecified sequence.

the preparatory expression agreement necessarily does not mean that one of the real notes of this agreement is the Dissonance of the following agreement - strict preparation -, but simply, that this agreement have as a function to introduce the agreement of dominant - remainder, the seventh and the ninth of dominant do not need preparation.

  • the various degrees of a Tonalité do not play in an equivalent way the preparatory part of agreement.

Better preparatory agreements

The following agreements must be regarded as better preparatory agreements.

  • second inversion of the agreement of tonic, known as quad and sixth of rate (example G).

  • Very other agreement of seventh or ninth of dominant (example I) - a exceptional sequence is always an excellent sequence.

  • agreements filling the function of sub-dominant , i.e., IVe degree - principal sub-dominant (examples has & B) - and IIe degree - sub-dominant secondary , very often with the state of first inversion (examples C & D).

One will note that in the major mode, these two preparatory agreements are often affected of a downward deterioration: the third of IVe, or the fifth of IIe - cf the article Sixth degree descending in a major tonality.

In the two modes, the preparatory agreement of IIe degree to the state of sixth, can be transformed into Neapolitan sixth.

Preparatory good agreements

In fact primarily the agreements fill the function of tonic .

  • Is tonic principal , i.e., Ier degree, fundamental, or with the state of first inversion (examples E, & F);

We have just seen that this degree, when it is employed in the form of quad and sixth of rate becomes a better preparatory agreement then (example G).

  • Is tonic secondary , i.e., the Life degree (example H).

Poor preparatory agreements

Only IIIe degree can agree qualified poor preparatory, because it makes hear the sensitive before the agreement of Ve degree. Such a sequence must thus be avoided.

  • Examples:

See too

Internal bonds

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