In the tradition of classical music, it is generally tried to use the same technical terms related to music in all countries. Even in the cultures in which native terms exist to refer to musical terms, usually the better known universal terms are employed.

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.

Maestro Hassan Nahid is one of the most prominent and distinctive artists who values high morals, discipline and hard work. His music activities include playing the Ney as both soloist and an accompaniment in the most important Iranian music orchestras and ensembles during the last fifty years, including the Orchestra of Iranian Instruments (Nusratullah Golpayegani), the Orchestra of National Instrumentalists of the Ministry of Culture and Arts (Payvar Orchestra), the Orchestra of Iranian Instruments (Morteza Hananeh) , Darvish Orchestra, Samaie Orchestra, Roudaki Orchestra, Maestros’ Ensemble, Aref Ensemble, as well as performances in various radio programs, many concerts in different countries, as well as a long teaching experience in the National Conservatory of Music, music universities and other music institutions to name but a few.

Fereydoun Shahbazian, the renowned Iranian composer, passed away at the age of 82 due to respiratory illness in Tehran. His last significant activity was leading the National Orchestra before the appointment of Homayoun Rahimian.

“Our ancestors believe powerful blows upon the Daf scatters evil spirits of disease and distress to create a clean and holy space filled with health and prosperity. Adding tools to Daf increases this instrument’s purification, spreading, and summoning powers of evil forces and goddesses. Daf was mostly depicted by red, color of blood, in ancient times or sometimes it was depicted with green, the color of plants and nature. There were probably some mysterious designs painted upon the wooden body and frames of these instruments just like today” (Pahlavan, 2013: 44).

Music as an art has its own special history; emergence of a singer, of an instrumentalist and then the emergence of the strong character of a composer covers three significant phases of the art of music. With the emergence of composer which was simultaneous with the emergence of the language of music, this art managed to offer a domain for criticism for its composer; a procedure which led to a magnificent variety and evolution in musical production. Even though the conflicts between singers and instrumentalists have not met their end in the Iranian society and while singers can achieve high, instrumentalists have yet to play behind curtains . In a special era, with the efforts of musicians such as Ali Naghi Vaziri (1887-1979) and Rouhollah Khaleghi (1906-1965), glimmers of a composing era started to glow bearing fruit in Khaleghi’s achievement as Iran’s first professional composer. Khaleghi made his reputation as a composer while Vaziri deserved to pioneer this path. By then Vaziri was well-known as a Tar player.

The National Instruments Orchestra of Iran performed its first concert amid much hope and anxiety on July 18, 2015. The Orchestra is founded by Roudaki Cultural and Arts Foundation which is a semi-private foundation in Iran. The Arts Director for the National Instruments Orchestra of Iran is cand the Orchestra Executive Director is Sadjad Pourghand.

4.3.1. To practice playing of doubles of notes involving two different fingers, each note is played at separate bows with slow tempo, each note is played perfectly regarding its bass and tenor sounds and then the considered double is played at another bow while considering the resulted sound of the double.

The year 2020 marks the 10th anniversary of Evlin Baghcheban’s death. She played a crucial role to promote opera and choral music in Persia (Iran). Born to an Assyrian-French family in Turkey, she studied singing and piano at the Ankara State Conservatory. In 1950 Evlin married the Persian composer and fellow student Samin Baghcheban and moved to Tehran.

In addition to the above-mentioned, polyphony can be also formed when a melody is performed by several singers in different ambiances or different sound registers according to their physiologic abilities. An example of this has been performed in rituals of Khanqah of Ghaderi darawish of Mahabad[i].