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 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].

After watching Quentin Tarantino’s latest movie, The Hateful Eight, everyone was excited by its novel music besides the beautiful scenes of blood and guts.
The Hateful Eight is the first collaboration between the world-famous film music composer, Ennio Morricone, and Quentin Tarantino as a famous director.

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.”

On occasion of the 8th anniversary of launching HarmonyTalk Online Journal on 6 April 2012, Reza Ziaei, master luthier and researcher on classical music instruments (violin family), announced that the first phase of the project to improve Qeychak has borne fruit. The new instrument would feature a bowl of ribs and the material used for the surface would be wooden. Carrying out the second phase of the project took more than 7 years engaging the new members of Reza Ziaei’s Workshop. In this phase, new researches were conducted from different aspects on the Qeychak and the modern versions of the instrument which were introduced previously by other instrument makers. The available versions of the instrument were studied in terms of their weak and strong technical features.

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.

Tehran Flute Choir is a 40-member orchestra of Iran’s best flutists; Iran’s best flutists? Yes! If you write down the names of the greatest Iranian flute players who participate at concerts and contribute to academic centers in Iran, you will see that most of them are among the choir’s members.

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.

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

Santour:
Nine-bridge and twelve-bridge Sanours were both used until the early Pahlavi dynasty. However, as Faramarz Payvar devised new methods for playing the nine-bridge Sanour, this variety of the instrument which was hammered by felted sticks became popular.