A part of the secrets of the masterpieces from the golden era lies in the special design of the instruments, as a result of a profound insight to and awareness of the significance of the precise calculation of the various components of the object of arts being created, such as making a violin or a bow.

4.3.1.3 Regarding the great linear distance and the unusual distance between the first and forth fingers, the first finger while playing the doubles of ninth and tenth interval, can be twisted in the knuckle area and the point mentioned in 3.1.2.5 paragraph in relation to the way first finger is placed indicating that the first joint of this finger in back of hand must be in line with the direction of forearm and left hand is not true here.

When the author was working on the piece “Playing Love” by Ennio Morricone (from the legend of 1900), he realized a failure of the Lip Technique. Needing to play a chord in the 14th position of the guitar and in order to complete the harmony, it is necessary to play a harmonic note on the 7th or 5th position; it was not possible to touch the string to play this harmonic note, because the Lip Technique is used for getting the notes and not to touch the string and producing harmonic notes. Naturally, the only possible way to touch the string was to use the nose at the required position and playing the note with the right hand, and this was the best option the author found to how to play such harmonic notes, and where the Nose Technique was generated.

Bahman Rajabi, the renowned tonbak (Persian goblet drum) player and educator, passed away at his home at the age of 86 due to a heart condition. He was the founder of a distinctive school of tonbak playing, and his teaching methods have been widely used by instructors of the instrument for decades..

Creating sound continuity between two notes in the source and destination positions when left hand position changes and “two different finger numbers” are involved is called portamento. Portamento can be performed on single string or two neighboring strings and with hand moving on fingerboard either upward or downward.

Farshad Sanjari, one of the most renowned Iranian conductors in the 1970s in Iran died after fire broke in his apartment in Vienna on November 22, 2019. Farshad Sanjari was not involved in politics; however, he was one of the victims of the Iranian Islamic Revolution in 1979. After the victory of the Islamic Revolution, his name was never seen as the conductor of any programmes.

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

With its simple physical structure and captivating sound, the Daf never belonged to a particular culture or location, and every nation had different usages for this instrument considering their dominant customs and traditions.

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

In heterophonic variant, two performers perform a single melody simultaneously and change it. Performing and changing a single melody simultaneously by two performers leads to the coincidence of different voices.