ehrouz Mohammadi, “Daf and its feasts in Ghaderieh’s Tekyeh” mentions that the outer thickness of arch where studs are located, [is] between one to one and a half centimeters (Mohammadi, 2001: 12). The thickness of arch should be gradually reduced from the installation place of rings to skin (Avazeh of Daf) to create a high volume, clear sound from Daf; also, the connection of arch to skin should not be less than one millimeter, because in this case the skin will be torn due to the sharpness of the wood (Mogharab Samadi, 2009: 79-78). The thickness of wood on the skin side is about two to three millimeters (Tohidi, 2002: 79).

In response, it should be said that it is better for the national anthem of a country to use the musical material exclusive to that country; however, some problems might come up in doing so the most important of which include: lack of familiarity of other countries’ music performer with the concerned country’s specific music intervals and special musical technique; and secondly, the strangeness of that music to the foreign listener.

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].

Finding a way to harmonize the Iranian music has been the subject of controversy among Iranian musicians for a long time. Some believe in the creation of harmonies for Iranian music based on a method which is similar to the tierce harmony; while others have either selected or invented some other methods. There are also some musicians who do not basically agree with the harmonization of the Iranian music.

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.

Antonio Stradivari (1644 – 18 December 1737) was an Italian luthier and is considered the most significant and greatest artisan in this field.

In a momentous celebration of two decades, the “Arasbaran Cultural Center” was the stage for the 20th anniversary of “Harmony Talk”, an online journal that has become a cornerstone in the music community. Sadjad Pourghanad, the editor-in-chief, delivered a speech that resonated with gratitude and vision.

The 4th Iranian Festival of Music Websites and Weblogs was held in Niavaran Cultural Center, in Tehran, Iran on Feb. 28th, 2015. The initiator of the festival was Sajjad Pourghanad, Iranian music writer, researcher, founder of the festival and Persian setar and tar player.

Payam Taghadossi (born in 1989) started his musical education at the age of 4 years with Monika Scherbaum in Bregenz (Austria). At the Conservatory Feldkirch he joined the class of Imke Frank and Martin Merker. Later he studied in Zurich (Switzerland) with Thomas Grossenbacher and Christian Proske, where he 2011 graduated as a Bachelor of Arts in Music Performance. Two years later as the student of Rafael Rosenfeld he received his Master of Arts in Music Performance diploma and later graduated as a Master of Arts in spezialized Music Performance in 2016 from the Hochschule für Musik Basel FHNW.

Davoud Pirnia, writer and musicologist was the founder of “Golha” (Flowers of Persian Song and Music) programs on Tehran Radio (1956-1966). He received his early education from his father, Hassan Pirnia (Moshir al-Douleh), and several tutors of the time (Taraghi, interview, July 1989) and continued his studies at Saint Louis School in Tehran and then in Switzerland and graduated in law. While studying law, Pirnia got acquainted with European classical music. Upon returning to Iran, he was employed by the Ministry of Justice and founded the Lawyers’ Guild. Then he was transferred to the Ministry of Finance and established the Department of Statistics in this ministry. Later, he became the head of the state inspection office at the Prime Ministry; he was, then, promoted to the position of the Deputy Prime Minister (Navab Safa, interview, August 1999)