With regard to each polyphonic form, only one specific and distinguished example is analyzed. These polyphonic forms are as follows:

Tehran Flute Choir was established in 1394 (late 2015) by Firouzeh Navai. Tehran Flute Choir, Iran’s first largest flute choir, recruited its members mostly from young talented flutists of Iranian Flute Association. Featuring piccolo, flute, alto flute and bass flute, Tehran Flute Choir, directed by Firouzeh Navai, premiered under the batons of Saeed Taghadosi on January 7-8, 2016 at Roudaki Hall in Tehran.

Imagine that, in the course of historical research, we discover a musical piece whose compositional techniques (including form, melody, texture, and orchestration) resemble those of a second-rate 19th-century composition. But further investigation reveals that this work predates that period by 200 years. Can we still deem it insignificant? Certainly not. Here, the first major role of historical judgment becomes evident.

The collaboration between Mozart and Haydn blossomed during the late 18th century in Vienna, a city that served as the epicenter of musical innovation. Amidst this vibrant cultural milieu, the two composers developed a profound friendship that extended beyond mere professional admiration. This connection is reflected in the six string quartets dedicated by Mozart to Haydn, aptly known as the “Haydn Quartets.”

At the end of the Qajar era and as Iran entered the power transition period, known as the constitutional era, the Iranian music went through a lot of changes. These changes gained momentum as the students and followers of Ali Naqi Vaziri’s entered the musical scene. These changes greatly influenced designs of instruments, playing methods, singing, composing, etc.

In this project, my specialized responsibility  was the basic drawings of the desired instrument with the help of engineering and mechanical software.  I have also the carried out phases related to engineering designs, related variables, and volume and weight calculations under Mr. Ziaei’s direct supervision from the very beginning. Regarding the challenges of this work, suffice it to say that the set of designs for the instrument lasted more than 9 months in the final stage of the project only.

On June 19, 2021 , young Iranian composer and pianist, Farhad Poupel’s piece, Road to Bach, was performed at the prestigious Suntory Hall by the great Japanese pianist, Kotaro Fukuma. The piece was commissioned by Kotaro Fukuma to have its world premiere in Suntory Hall during a concert by the same name.

Since for playing violin, it’s necessary that the player’s palms and fingers be inclined toward the fingerboard, therefore, the player, while bringing up his hand, should turn it toward the fingerboard.

With this description, we have automatically included a criterion called “History”, Until we know the time of the creation of a work of art, we cannot judge whether it has been easy to create or not. Suppose that, in a historical study, we find a musical work that is similar in compositional techniques (including form, melody, context, and orchestration) to a minor work of the nineteenth century; however, our research proves that, this work dates back to 200 years prior to that date. Can we still consider this work insignificant? Definitely not! So this is where the first use of history-based judgment comes into play.

In 1990  an Austria-based Persian musician Khosro Soltani, in cooperation with Hossein Alizadeh, put out an album entitled, Ancient Call A New (Nobang-e Kohan). After many years, a few ancient Persian instruments such as Sorna, Karna, Naghareh,etc. have been used, instruments which have been left out of the circle of Persian classical musical instruments for centuries.