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).

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.

Discussions and research have been conducted on the harmonization of “dastgah” and melodies in Iranian music, and several books have been published on this topic, including “Armenian Music of Iran” by Ali Naghi Vaziri, “Harmony of Iranian Music” by Farhad Fakhreddini, and “Harmony of Iranian Music” by Ali Ghamssari. A master’s thesis titled “Presenting a Solution for Harmonizing Based on the Structure of Tritone Intervals” was written by Atefeh EinAli in 2014. Additionally, the invention and use of “Even Harmony” by Morteza Hannaneh should be mentioned.

B. applying force: the force needed for putting finger on finger board is applied through finger tips and using the rest of hand set especially wrist is not allowed. To practice this, it is possible to hold violin without the bow and throw the fingers on the finger board from 1-2cm distance; apply force only through finger tips.

Khosrow Djafarzadeh, musicologist and architect, who was also one of the main authors of HarmonyTalk journal passed away on 15 July 2019.

Composing a traditional Iranian opera using the Iranian modal system, dastgāh, has always been my dream. I first approached this by composing an opera called Ashura followed by the operas Rumi and Hafez. I believe that in order to attract an international audience for Iranian opera, it is essential to fuse dastgāh with Western classical forms.

3/1/2/5: When the first finger lands next to the nut, continuation of first phalange of this finger, on back of the hand, should be in line with continuation of the back of the wrist and the left hand; moreover, it should not pass them and bend at knuckles. Otherwise, an uncommon stretch is created in first finger’s knuckle also reducing the freedom of other fingers (especially the fourth finger) in finger placement.

Golnoush Khaleghi (1941-2021), a Washington-based Persian musician and the daughter of the contemporary Persian (Iranian) composer and theoretician Rouhollah Khaleghi (1906-1965) founded a musical center called RKAC to keep the name and the work of her father alive.

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.

Two choirs alternatively perform Veŝ Tavaré Na avaz (Transcription 5). The second group starts the avaz before the first group finishes it; consequently, two different voices coincide (Transcription 5, staves 2 and 5).