The third violin is not common in orchestral music especially in the classical genre, but here it was measured and supported in the common range with the alto. As critical point of view the idea of not using brass instruments was formed from the aim of removing sound signs of warfare; in the other hands, it was a music project that totally bringing up with the peaceful wishes. Overall, maybe from a cursory of a glance the orchestration evokes some similarity to the first half of the classical period.
About meaning of "classic" word in this case:
it has not been considered as formal development and conventional tonal harmonies aspect of this era, but just it may be stated about how it develops throughout the time which shows the color of the orchestra and composing sounds in a classical way. For instance; one of the main factors of the classical view that we can propound; it is the subject of the cadence or the concept of the ending that is one of the most fundamental goals of classical aspect.
"DASHTI"; a mod of Iranian music that combined with two tetrachords, which is addressed as "Avaz Dashti" in "DASTGAH E SHUR" from the Iranian system music. DASHTI in "B" is used as a main axis in the expansion of the ideas of the modal music (whether horizontal or vertical). As well as the relationship with its mother's system should be noted, because of the important role of finalist (of course, the use of altering notes can only be discussed separately in harmonic aesthetics)
In terms of modal development, there are some similarities between the Hypophrygian (deuterus plagalis) mode and DASHTI.
Hypophrygian literally meaning "below Phrygian (plagal second)", is a musical mode or diatonic scale in medieval chant theory, the fourth mode of church music. This mode is the plagal counterpart of the authentic third mode, which was called Phrygian. It can be seen there are some functional similarity between SHUR and Phrygian as main mode and DASHTI and Hypophrygian as secondary modes. To clarity, in this case; plagals have been used to increase the range of the notes (the secondary modes goes up to the fourth just below the finalist and the fifth just above the finalist, which in any case should end with the same finalist).
In general, apart from common tetrachords in different cultures, it is the potential musical language of each culture that opens up and creates its own differences in its rhetoric.
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In terms of Temperament"
In music, "Temperament" refers to the tune system, which is able to respond to the needs and problems of the tune with a little compromise in the purity of the intonation of the intervals.
"Tempering" or the process of toning, or in other word, is called the process of changing or altering a frequency interval, through narrowing or increasing it, compared to the pure sound. As to be included in the following definition:
Any scheme that modifies or describes all twelfth intervals in the fifth interval such that it accommodates pure schemes and produces pure measures of major thirds.
The development of well-temperament created a fixed tuning system for some keyboard instruments, such as the piano, to make it possible to use 12 semitones in playing and composing.
Well temperament:
Refers to different tuning systems through octave division, which are 4 main tuning systems:
1. Pythagorean tune (Pythagorean tune)
2. just-intonationin
3. Medium tone temperament
4. Equal temperament
FIRST MOVEMENT (Adagio sostenuto)
SECOND MOVEMENT (MODERATO)
