4.3.1. To practice playing of doubles of notes involving two different fingers, each note is played at separate bows with slow tempo, each note is played perfectly regarding its bass and tenor sounds and then the considered double is played at another bow while considering the resulted sound of the double.

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

Microtona is a sixty-eight-page Booklet with personal comments by the contributing microtonal artists. The booklet also includes a DVD which consists of 8 original video tracks and 9 original audio tracks. The project is an international one featuring unpublished pieces by composers from Iran, Japan, U.S., France, Austria, Germany and Belgium.

Simorgh (Simorq) Orchestra was founded by the renowned Iranian composer, Hamid Motebassem, in 2011. Simorgh Orchestra is the largest orchestra featuring Iranian national instruments. Although the orchestra established by Master Hossein Dehlavi, the great Iranian composer, in 1993 was larger than Simorgh Orchestra, it only featured the Iranian plucked string instruments unlike the latter one. The first album which was recorded by the Orchestra, conducted under Motebassem’s baton, was his Simorq based on Zal story from Shahnameh by Ferdowsi, the great Iranian poet.

Avaye Naerika Percussion Orchestra is an Iranian percussion orchestra featuring 40 lady percussionists. The Orchestra was established as Iran’s largest all-female percussion orchestra in 2008 by Ms. Minoo Rezaei under the title Naerika Percussion Orchestra and changed its name to Avaye Naerika in 2017.

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.

Iranian pianist Layla Ramezan has always sought to create a connection between her Persian origin and the contemporary music which she encounters daily. Sound, phrasing, a particular sense of rhythm and a refined understanding of the “time of musical development” are the foremost qualities of her interpretations. Her musical and pianistic education began in Tehran at the age of 8 with Mostafa-Kamal Poortorab. Having moved to Paris and received a scholarship from Albert Roussel Foundation, she integrated the classes of Jean Micault and Devi Erlih at the Ecole Normale de Musique de Paris Alfred Cortot, where she received a Diplôme de Virtuosité in piano performance and chamber music.

In the few days prior to the New Iranian year (March 2015), the news of the revival of Tehran Symphony Orchestra under Ali (Alexander) Rahbari’s conductorship was announced. Ali Rahbari, who served as assistant to Herbert von Karajan in Berlin Philharmonic Orchestra at a very young age, was also invited to conduct Tehran Symphony Orchestra in 2005; however, the election of Mahmoud Ahmadinejad’s government put an end to his collaboration with this Orchestra. Recently, it was announced that Rahbari is invited to conduct an orchestra in the U.S.

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

Gholam Hossein Banan was born in 1911 in Tehran. He was born in an affluent art-loving family who were Naser al-Din Shah Qajar (1848-1896)’s relative. The Qajar King was his mother’s uncle on her father’s side. He learnt his first lessons in music while his father sang Iranian avaz (improvised rhythmic-free singing), he then attended classes by the renowned Iranian composer, Morteza Neydavoud (1900-1990) along with his sisters; the composer is, therefore, considered as his first teacher. He then learnt Iranian avaz under the supervision of Mirza Taher Zia Resaee (Zia-o Zakerin) and Naser Seif in an oral manner.