One of the most important criteria for measuring the quality of a piece of classical music is number of times the piece has been performance by different ensembles and orchestras in different eras. This belief has become so pervasive in some societies, such as Iranian society, that it is considered the only criterion for measuring the quality of a piece of classical music.

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.

Rouhollah Khaleghi was the master of composing beautiful melodies. He was the premier of the course of history which was first established by Ali Naghi Vaziri and which improved the Iranian music from simply a gathering music to the classical music of the country. First efforts to compose independent and instrumental music can be also traced in Khaleghi’s works.

At the end of the Qajar era and as Iran entered the power transition period, known as the constitutional era, the Iranian music went through a lot of changes. These changes gained momentum as the students and followers of Ali Naqi Vaziri’s entered the musical scene. These changes greatly influenced designs of instruments, playing methods, singing, composing, etc.

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 the world music culture, there are instruments which were traditionally associated with a certain gender. It remains disputable to what extent these gender-based perceptions have been logical and scientific. For example, as playing wind instruments need more breath strength and the public opinion believe that men have stronger breath compared to women, these instruments are predominantly a male domain. Harp is also considered a female instrument as the public opinion believe that women have finer fingers and can therefore better perform nuances and delicate techniques on the instrument.

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.

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.

The “Pledge of Love” is the first album in a series composed based on the tasnifs by the renowned Iranian tasnif-maker Mohammad Ali Amir Jahed and recorded by Sahba Kohan Ensemble with Ramin Bahiraie as signer.

The term “School of Vaziri” is often used in writings on Iranian music, but the exact meaning of the term is not clear; some of the authors have used the term to only refer to the group of Vaziri’s students, including a large group of his conservatory students and his Tar students such as Abolhassan Saba, Rouhollah Khaleghi, Ahmad Foroutan Rad, Hossein Sanjari, Heshmat Sanjari and others. But can we consider all Vaziri’s students as followers of his school of thought? This is definitely a mistake, because we know that some of Vaziri’s students have chosen a completely different path than that of Vaziri.