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.

The Roudaki Foundation presented the permanent conductor of the National Orchestra (Orchestr Melli), Homayoun Rahimian, in a ceremony, and finally, after four years, the national orchestra found a permanent conductor. Homayoun Rahimian is the fourth permanent conductor of this orchestra after Farhad Fakhreddini, Bardia Kiaras, and Fereidoun Shahbaziyan. He, who has previously had experience of conducting concerts besides being Meister’s concert of this orchestra, performed the concert “Autumns” on the 20th of Tir, performing works by Rouhollah Khaleqi, Javad Ma’roufi, and Hossein Dehlavi.

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

Regarding the classification of a new instrument in an instrument family, one can point to a number of fundamental issues, one of the most obvious of which is the instrument’s visual features. If we look at how the new instrument has changed compared to its historical versions, the set of visual elements that link the instrument to the Qeychak family becomes apparent. But other characteristics such as the geometric dimensions of the instrument, characteristics of the instrument’s various parts and how they relate to each other, its systematic performance, its sound range (compared to modern versions), the material and color of the sound, the way it is played and the like, can be considered in order to classify the instrument in the Qeychak family.

Maestro Hassan Nahid is one of the most prominent and distinctive artists who values high morals, discipline and hard work. His music activities include playing the Ney as both soloist and an accompaniment in the most important Iranian music orchestras and ensembles during the last fifty years, including the Orchestra of Iranian Instruments (Nusratullah Golpayegani), the Orchestra of National Instrumentalists of the Ministry of Culture and Arts (Payvar Orchestra), the Orchestra of Iranian Instruments (Morteza Hananeh) , Darvish Orchestra, Samaie Orchestra, Roudaki Orchestra, Maestros’ Ensemble, Aref Ensemble, as well as performances in various radio programs, many concerts in different countries, as well as a long teaching experience in the National Conservatory of Music, music universities and other music institutions to name but a few.

Joint application of the two techniques of “Lip” and “Nose” could be effectively applied for hearing and playing far-away intervals, by the Classical Guitar. Before this, a Classical Guitar player had to waive playing intervals not possible with the left hand, and had to replace or eliminate some notes, making it possible to play such intervals; specifically the capability of the left hand of the musician, was also a factor in such a selection. These methods are hereby illustrated by photographs and a video-file, in order to provide optimum comprehension of applying these methods, invented by the author; specifically the “Lip” technique, which is considered to be a more significant technique, emphasized by the author.

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.

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.

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.

Conclusion

“Daf” is one of type of percussion instruments that has a long history and is commonly known as circular instruments (with a rim). In some tribes, Daf was used as the main instrument in festivity and joy ceremonies; in another tribe it was used as the main instrument for war and campaign ceremonies and some others used it for ritual and religious ceremonies.