What are the characteristics of the West Asian and North African music systems in terms of musical form?

Fixed and Cavalier MusicThe musical process of this music family is both fixed and heavily characterized by the use of cavalier music. However, unlike the cadences of East Asian music, these cadences are based on the twenty-fourth scale of the Persian-Arabic tradition. Specifically, on the tones that constitute the middle second (34 whole tones) and the augmented second (64 whole tones), there are minor second intervals that move up and down, resulting in a "cadence". Therefore, this kind of banding can be regarded as conditional banding. Conditional bandoneon music, is the West Asian - North African music system of the music of the charm.

The tonal basis of four-tone rowsThe tonal basis of the West Asian-North African music system is also a four-tone row composed of different diatonic intervals, and two four-tone rows can be selected to synthesize a kind of tonal scale. Since an octave is divided into twenty-four equal parts, there are many styles of tetrachords, and the resulting modal scales are also very rich, but not many scale modes are actually used. For example, the following seven sets of four-note columns are used as the basis for synthesizing the scale tuning system of the Persian classical music Dasja. `

Although both the West Asian and North African music systems have tetrachordal rows, the rows are constructed and spun differently. In addition, the melodies of West Asian and North African music systems do not have a functional harmonic surface.

The West Asian and North African music systems use a combination of loose and organic plates, with the more distinctive one being the organic plate. It is often characterized by fixed rhythmic patterns throughout the piece, and there are more than a hundred of these named fixed rhythmic patterns. In terms of beat, the music system uses two-beat, three-beat, four-beat and mixed beat. In particular, the mixed beats such as five-beat and seven-beat are more characteristic of the music system.

Monophonic and polyphonic West Asian-North African music system's weaving thinking is mainly horizontal line (monophonic), but due to the use of fixed rhythmic patterns, sometimes also shows the vertical line (polyphonic) thinking characteristics.