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).

Today, percussion instruments have such a high place in music that are an essential element of orchestras. This has attracted many people to this type of instrument with roots as old as the first humans. A historical study of music, shows that humans used the sound of these instruments to defend themselves against wild animals and, over time, for alerting each other, signaling their readiness and encouraging people for war, ritual ceremonies, dances, etc. in a manner that is still clearly visible in music and some ritual ceremonies.

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.

1.5.1.3.sometimes, a player, due to different reasons, may decisively want to play continuously two notes with a half-step by means of the same finger, in such a case, it’s necessary to open the interior curve of the finger like a spring. Naturally coming back, the curve of finger should be closed and the finger should become curved shape again (see paragraph 3.1.2.1).

The year 1396 (21 March 2017-20 March 2018) was the most sorrowful year for HarmonyTalk journal. One month after holding HarmonyTalk’s 13th establishment anniversary in Mohsen Ghanebasiri’s house in Tehran in April 2017, he untimely passed away. Mohsen Ghanebasiri was the prominent HarmonyTalk author.

Despite the fact that Iranian folk music (regional music of Iran), like the Radif of Iranian traditional music, is monophonic and follows heterophony in principal, we experience polyphonic forms, albeit, majorly unconscious.

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.

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.

Amidst the popularity of traditionalism in the Iranian music, Parviz Meshkatian (1955- 2009) moved from Neyshabur to Tehran. He learnt to play Santour and became educated in the Radif of Iranian music at the Centre for Preservation and Promotion of Music which was at the forefront of promoting the return to musical traditions. Despite his studies at a centre which promoted the use of the phrase “traditional music” in Iran, Parviz Meshkatian emerged as a creative artist whose innovative and unique ideas attracted the admiration of Iranian artists and people from different walks of life. This article studies the reason behind Meshkatian’s deviation from the wrong approach of traditionalism strongly promoted by the Centre and argues that apart from the issue of theory of Iranian music, he can be considered as Ali Naqi Vaziri’s successor.

In the world of classical music, the position of soloist has always been exceptional. Apart from the technical ability that many orchestral musicians also have, the soloist must also have a special power to be able to present a different and unique perspective of a piece. The soloist must maintain its special power of expression not only in solo roles but also when interacting with the orchestra.