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Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
1
Divisions of the Apotome on the Middle-Eastern Qānūn
Julien Bernard Jalâl Ed-Dine Weiss & Stefan Pohlit, Ph. D.
Biographical Notes
Julien Bernard Jalâl Ed-Dine Weiss, born in 1953, abandoned a career as a classically trained
guitar player in 1978 for studying the Near-Eastern qānūn with famous masters in Cairo,
Tunis, Istanbul, Baghdad, Beirut, Aleppo, and Tehran. In 1983 he founded the “al-Kindi”
ensemble that, until today, belongs to the foremost formations of maqām music on the
international stage, with more than twenty records, most of them being produced by
“Harmonia Mundi”. Residing in Aleppo in Northern Syria since the 1990’s, he collaborated
with legendary Soufi singers. Weiss is laureate of the prestigious Villa Médici award and, in
2001, was appointed Officer of Arts and Letters by the French Minister of Culture. Besides
his artistic agenda, he continues to investigate extensively in rhythmic patterns and micro-
tonal intonation of the maqām tradition. Feeling unsatisfied with the common tempered qānūn
models, he has, so far, conceived nine prototypes that, for the first time, fully rely on just
intonation. http://al-kindi.org
Stefan Pohlit, born in 1976, studied Composition and Music Theory in Saarbrücken, Basel,
Lyon, and Karlsruhe, most notably with Wolfgang Rihm and Sandeep Bhagwati. Since 1999,
he studied the Near-Eastern maqām tradition and traveled extensively both in Turkey and the
Arab world. In 2008, the Ankara State Conservatory appointed him as a Composition teacher
in the rarely granted position of a “foreign expert” of the Turkish State. In 2011 he defended
his doctoral thesis on the tuning system of Julien Bernard Jalâl Ed-Dine Weiss at the music
research center MĐAM of the Istanbul Technical University. Besides his activities as a
composer, Pohlit continues to investigate in conditions and meanings of cross-cultural art-
music. http://www.stefanpohlit.com
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
2
Introduction
As the most complicate instrument with fixed pitch supply within the maqām tradition, the
qānūn plays a central role in the definition of the Near-Eastern tuning system. Originally this
instrument had to be retuned separately for every scale structure, comparably to the Iranian
santur. During the first half of the 20th century, mandal-s, movable levers, were applied to
every course of strings with which the intonation can be adjusted during performance. These
small metal bridges, however, have also caused confusion between theory and practice
because they are tuned, on all common models, upon the tempered twelve-note scale that has
little in common with pure Pythagorean and harmonic intervals as they are described in the
traditional treatises. This article shall provide a brief account, containing four existing systems
that were invented during the 20th century.
Other than the Western piano and the pedal-harp, the strings on the qānūn are structured on
the foundation of a Pythagorean heptatonic scale – which equals the scale of ‘aĝam on C in
the Arab world and Çargâh in Turkey:
Figure 1: Pythagorean Heptatonic Scale
While the common Arab-Egyptian qānūn is based on a simple division of the octave into 24
notes, the modern Turkish system offers 13 different pitches on every course of strings and
amounts in a pitch supply of 72 notes within one octave. The Turkish system may, thus, be
compared to the 72-note scale of Byzantine church music since the reform of Chrysanthos
(Giannelos 1996, Karas 1989). The mandal-s on both of those common models always detune
a course of strings within a tempered whole-tone (200c). In case of “partial temperament”
(Weiss 2004), the basic gamut may be tuned according to just harmonic fifths 3/2, but then,
the division of the bridges, due to the tempered intervals that it produces, may lead to notable
distortions within the instrument’s intonation. Furthermore, not all octaves on the Turkish
model contain the same amount of mandal-s. In many cases, mandal-s on affected courses of
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
3
strings may still divide a tempered whole-tone mechanically upon equal distances, and,
consequently, many microtonal pitches may not allow parallel ocatve-doubling in consistent
intonation.
The qānūn of Aleppo, customarily invented for the tradition of Northern Syria, offered a
highly practical solution, with ten mandal-s being arrayed upon specific interval sizes, as they
appeared in common performance practice. However, this model has practically vanished
since the 1980’s. In 1990, the renowned French qānūn virtuoso and founder of the “Al-Kindi”
ensemble, Julien Jalâl Ed-Dine Weiss constructed a novel prototype, that, for the first time,
uses strictly just interval ratios. Weiss’ system includes 14 mandal-s that divide detune strings
on the basis of twice the Pythagorean apotome (2187/2048, 113.69c). In abandoning the
concept of temperament, Weiss, has, thus, successfully attempted to reconcile theory and
practice while understanding the different regional variations and characteristics within the
Near-Eastern tradition from a trans-national perspective.1
Temperament and Traditional Tuning Theories
In practice, the qānūn may shift to an audible extent from a correctly intonated lute. Some of
the most central interval ratios of the Near-Eastern tradition cannot be produced on the basis
of temperament, although the theoretical tradition distinguishes them neatly. Scholarly theory
and empirical practice in Near-Eastern music may always have coexisted without necessarily
supporting each other, since the Arab Middle-Ages (Chabrier 2001:601) until the modern era
(D’Erlanger 2001-V:x&6, Marcus 1993:40, Wright 2005:226). The use of a tempered
semitone of 100c, however, obscurs certain intervallic distinctions that appear vital to the
characteristics of many fundamental modal genres. Both theory and practice account for a
minor and a major semitone, traditionally conceived as the Pythagorean limma (90.23c) and
apotome (113.69c) and separated by the Pythagorean comma. Although musicians may resort
to the tempered twelve-tone scale when describing scale degrees, all experienced perfoemrs
discern certain modal genres, such as ĝins Kurdī and ĝins Hiĝāz, by this difference.
The Pythagorean tradition of the Arab Middle-Age, as in ’Abu Nasr Muhammad al-Farābī
(D’Erlanger 2001-I) and ’Ibn Sīnā (D’Erlanger 2001-II), was, furthermore, extended to a
1 More detailed information as well as a complete bibliography may be obtained from Pohlit, Stefan. 2011. Julien Jalâl Ed-Dine Weiss. “A Novel Tuning System for the Middle-Eastern Qānūn.” Ph.D. Thesis in Music, Submitted to the Đstanbul Technical University, Institute of Social Sciences, MĐAM. http://www.stefanpohlit.com/dissertation.engl..htm
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
4
characteristic inventory of harmonic ratios that, traditionally, were referred to the fretting
conceived by the lutist Mansūr Zalzal al-Dārib of Baghdad (died 791, Farmer 2001: 118):
Table 1: Division of the Fourth on the Zīr String of Farābī’s lute (D’Erlanger 2001-I: 46,
During 1985: 81, Chabrier 2001: 603, Tura 1988b: 107, also cited in D’Erlanger 2001-III:
116).2
0
1 1
cents
1
256 243
90.23
2
18 17
98.96
3
162 149
144.82
4
54 49
168.21
5
9 8
203.91
6
32 27
294.14
7
81 68
302.86
8
27 22
354.55
9
81 64
407.82
10
4 3
498.05
└──────────────── 9 ───────────────┘ └──────────────── 8 └────────────── 9 ───────────┘ └──────────────── 8 └────────────── 8 └─────────── 2187 ──────────┘ └──────── 2187 ───────┘ └─────────── 2048 ──────────┘ └──────── 2048 ───────┘
These so-called “Zalzal frets”, usually described as “quarter-tones” were conceived with
different ratios and appear in notably low tuning on the lute of ’Ibn Sīnā:
Table 2: The Lute of ’Ibn Sīnā, Zīr String (D’Erlanger 2001-II: 103-245, Manik 1969: 47-51,
During 1985: 91-93, Chabrier 2001: 606, and Wright 2005: 225-29).
0
1 1
cents
1
2187 2048
113.69
2
13 12
138.57
3
9 8
203.91
4
32 27
294.14
5
39 32
342.48
6
81 64
407.82
7
4 3
498.05
└─────────── 9 ─────────┴──────────── 9 ────────────┘ └─────────── 8 └──────────── 8 ───────────┘
└────────────── 9 ───────────┘ 8
└── 2187 ──┘ └──────── 2187 ───────┘ └ ─ 2048 ──────────┘ └─── ─────2048 ───────┘
2 In this article the struck-out flat accidental is used for signifying a general concept of “quarter-tone”, as it is used, for example, in publications such as Shiloah 1981 & Touma 2003.
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
5
Safīyy al-Dīn’s 17-note scale from the 13th century may remind of Farābī’s Khorasan tunbur
from the 10th century (D’Erlanger 2001,I: 218-42, During 1985: 87 et seq., Chabrier 2001:
608, Tura 1988e) but differs from all other Arab systems in relying exclusively on
Pythagorean ratios. This system, built entirely of Pythagorean limma-s and comma-s,
translates the “quarter-tone” degrees into complex products of fifths and octaves and raises
them substantially. The “neutral” second and third were, thus, converted into interval that
differ from the harmonic minor whole-tone 10/9 and from the harmonic third 5/4 only by the
negligible amount of the schisma:
Table 3: Division of the Fourth in Safīyy al-Dīn’s 17-Note Scale (D’Erlanger 2001-III: 220-
233, Manik 1969: 62 et seqq., Tura 1988e: 182-85, and Chabrier 2001: 610 et seq.).
0
1 1
cents
1
256 243
90.23
2
65536 59049
180.45
3
9 8
203.91
4
32 27
294.14
5
8192 6561
384.36
6
81 64
407.82
7
4 3
498.05
└─────────── 9 ─────────┴──────────── 9 ────────────┘ └─────────── 8 └─────────────8 ───────────┘
└────────────── 9 ───────────┘ 8
└─ 2187 ──┴ 531441 ┴───2187 ──┴── 256 ─┴── 256 ───┴── 2187────┴── 256 ───┘ └ ─2048 ── 524288 2048 243 243─── ─2048 ─────── 243
It appears evident that the fundamental scale of 17 notes was completed to 24 notes until the
middle of the 19th century (Popescu-Judetz 2002:169-71, table I). On the other hand, the
controversy over the “neutral” scale degrees Segāh, ‘awĝ, and their octave equivalents
continues to divide Turkey and the Arab world within the maqām tradition: While the modern
Turkish systems after Raûf Yektâ (Yektâ 1921, D’Erlanger 2001-V: 27), Hüseyin Sadettin
Arel, and Suphi Ezgi (Signell 2006:41&44-45 & Özkan 2006:38&62) resurrected the
Systematist scale of Safīyy al-Dīn with its potentially unrealistic Pythagorean deduction
method, Arab theorists concentrated on the calculation of intervals for approximating quarter-
tones. The Congress of Cairo of 1932 took stock of the variety of different proposals, such as
the systems of Maurice Collengettes (D’Erlanger 2001-V:23, fig. 7), Raûf Yektâ (op.cit.: 27,
fig. 8), ‘alī al-Darwīš (op.cit.: 29, fig. 9), Miĥā’īl ’Ibn Ĝurĝus Mušāqah (op.cit.: 34, fig. 10),
Mansūr ’Awad (op.cit.: 37, fig. 11), ’Āmīn al-Dīk Affendī (op.cit.: 42, fig. 13, ’Idrīs Rāġib
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
6
Bey, and Iskandar Šalfūn (op.cit.: 40, fig. 12) , although the participants departed without
solving their general disagreements (D’Erlanger 2001-V:12).
Some modern Arab theorists, such as ‘alī al-Darwīš and Tawfīq al-Sabbāġ (Al-Dalīl al-
Mūsīqā al-’Amm: fī ’Atrab al-Anġām, 1950, referenced in Racy 2003:107), introduced the
comma into their scale concepts and, similarly to the Turks, divided the major whole-tone 9/8
into nine comma-s. As the Pythagorean comma (23.46c) does not fit exactly into a closed
cycle, the general scale was referred to a pitch supply of 53 Holdrian comma-s (21.82c) in
order to please the general interest in tempered systems. However, al-Sabbāġ also criticized
the lack of precision of a tempered 24-note scale and, therefore, introduced additional
symbols and refinements to the general tuning (Racy ibid.). In this manner, it became more
and more apparent that a modern tuning theory would not simply force all available pitches of
intonation practice into one simplified method of deduction but rather account for the various
aspects that a note may obtain in different contexts. The Turk Mustafa Ekrem Karadeniz, a
contemporary of Arel and Ezgi, proposed another highly individual attempt to such broader
conception in creating a scale of 42 notes (1985:10 et seqq.) that, however, has not found its
way into general practice.
The Arab-Egyptian Qānūn
Contrarily to the ambitious attempts of the diverse historic and modern treatises, tempered
modern qānūn-s neither produce the Pythagorean and harmonic ratios of the theoretical
tradition nor do their mandal-s conform with the theory of comma-s that appears so
prominently in discussions on Near-Eastern music. Rather than relying on specific theoretical
postulations, their mechanically applied division of the tempered whole-tone involves yet
additional tuning cycles. The modern qānūn may, thus, easily perform together with a
tempered piano or synthesizer, but serious approaches to the handed-down pitch supply of the
maqām tradition may be obscured by its lack of reliable interval sizes.
The Egyptian model, common in the Arab world and prominently conceived by instrument-
makers such as Rabīy‘a Šaraf and Gābīyy Tutunjī, insists on the specifically Arab preference
for quarter-tones. As many qānūn players perform in popular contexts and together with
synthesizers (Rasmussen 1996), the instrument may be tuned consistently upon the tempered
scale. Between C and D, D and E, F and G, G and A, and A and B, a sharp interval is meant to
equal the flat one of the next higher course of strings:
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
7
� 200c ┌─────────────────────── = ─────────────────────┘
└────── 50c ────┴──── 50c ───┴──── 50c ────┴──── 50c ──┘
Figure 2: Mandal Tuning on the Egyptian Qānūn. Comparison Between C and D Strings In a completely tempered context, the second halves of the E and, respectively, B courses
produce the same pitches as the first halves of the F and, respectively, C courses:
� � = └─────────┴───────┘ 100c ┌─────────────┬──────────┐
Figure 3: Mandal Tuning on the Egyptian Qānūn. Comparison Between E and F Strings.
In case of full temperament, some of the most crucial interval ratios may be reached in close
approximation. The more essential deficiency of this solution originates in the unification of
the limma and the apotome into one single semitone:
18/17 (98.95c ─┘ 12/11 (150.64c) ────┘
9/8 (203.91c) ────────┘
81/68 (302.55c) ───────────┘
27/22 (354.55c) ───────────────┘ 81/64 (407.82c) ──────────────────┘ 4/3 (498.05c) ───────────────────────┘
Figure 4: The Fourth on the Egyptian Qānūn, Full Temperament.
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
8
Many older masters have preferably tuned the heptatonic frame of the strings by ear and, thus,
upon Pythagorean ratios. In that case the scale may be based either on the fundamental of C or
on B flat. Due to the shifts between tempered mandal-s and contextual Pythagorean interval
sizes, the consequences are different for some of the resulting pitches:
17/16 (104.96c ─┘ 59/54 (153.31c) ────┘
9/8 (203.91c) ────────┘
153/128 (308.87c) ───────────┘
59/48 (357.22c) ───────────────┘ 81/64 (407.82c) ──────────────────┘ 4/3 (498.05c) ───────────────────────┘
Figure 5: The Fourth on the Egyptian Qānūn, Based on ‘aĝam in C.
17/16 (104.96c ─┘ 59/54 (153.31c) ────┘
9/8 (203.91c) ────────┘
32/27 (294.14c) ───────────┘
72/59 (344.74c) ───────────────┘ 64/51 (393.09c) ──────────────────┘ 4/3 (498.05c) ───────────────────────┘
Figure 6: The Fourth on the Egyptian Qānūn, Based on ‘aĝam in B flat.
On the professional Arab qānūn prior to the 1970’s an additional lever was provided, serving
for the production of the major semitone of genre Hiĝāz and the diminished fourth of genre
Sabā. Consequently, this model contained six different notes on one course of strings:
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
9
17/16 (104.96c ─┘ 15/14 (119.44c) ────┘
59/54 (153.31c) ───────┘
9/8 (203.91c) ────────────┘
153/128 (308.87c) ────────────┘
135/112 (323.35c) ───────────────┘ 59/48 (357.22c) ────────────────────┘ 81/64 (407.82c) ───────────────────────┘ 4/3 (498.05c) ─────────────────────────────┘
Figure 7: The Fourth on the Extended Arab Qānūn, Based on ‘aĝam in C.
17/16 (104.96c ─┘ 16/15 (111.73c) ────┘
59/54 (153.31c) ───────┘
9/8 (203.91c) ────────────┘
32/27 (294.14c) ──────────────┘
6/5 (315.64c) ───────────────────┘ 72/59 (344.74c) ─────────────────────┘
64/51 (393.09c) ─────────────────────────┘ 4/3 (498.05c) ─────────────────────────────┘
Figure 8: The Fourth on the Extended Arab Qānūn, Based on ‘aĝam in B Flat.
This system provides genre Hiĝāz with a desired higher minor second:
Figure 9: Optional Addition to the Egyptian Qānūn: Major Semitone for Genre Hiĝāz.
While this solution can be compared to certain lute types with lesser amount of frets such as
the buzūqī, an entirely correct tetrachord of this genre would also lower the third by one
comma:
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
10
16/15 ──┘ 5/4 ───────┘ 4/3 ──────────┘
Figure 10: Requirement for a Correctly Tuned Ĝins Hiĝāz.
The Qānūn of Aleppo
Julien Jalâl Ed-Dine Weiss discovered this model during his early years in Paris in an old
publication owned by Jean-Claude Chabrier and, while living in Aleppo, was able to take
precise measurements from an existing instrument. This qānūn is closely related to the
Aleppian instrument-maker Šukrīyy Antaqlī, a contemporary of ‘alī al-Darwīš. Conceived
specifically for the abundant local tradition of Northern Syria, the model was adopted and
refined by other instrument-makers, such as ‘alī Wa’ez and Sāfīyy Zaynab.
This instrument has practically ceased to exist since the 1980’s. It provided eleven different
pitches on every course of strings. They were arrayed according to two tempered semitones.
However, the inner mandal positions were tuned customarily for the production of specific
interval sizes, as they appeared in the local tradition of Aleppo. The cent values given in fig.
11 shall only offer an impression of the approximate location of the bridges:
� 200c ┌─────────────────────── = ─────────────────────┘ �
└ ~16c ─┴─ ~32c ─┴─ ~12c ─┴─ ~32c ─┴─ ~12c ┴─ ~12c ┴ ~32c ─┴ ~12c─┴─ ~32c ─┴─ ~ 12c ┘
└───────── 100c ───────┴─────── 100c ────────┘
Figure 11: Aliquot Division of the Tempered Apotome on the QŒn´n of Aleppo. C and D Strings.
In the case of full temperament, the following ratios for the crucial seconds and thirds appear
in close approximation:
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
11
~18/17 (98.95c) ──┘
~16/15 (111.73c ──────┘
~88/81 (143.5c) ──────────┘
~128/117 (155.56c) ────────────┘
~512/459 (189.18c) ─────────────────┘
~9/8 (203.91c) ───────────────────────┘
Figure 12: Approximated Seconds on the QŒn´n of Aleppo.
~81/68 (302.86c) ──┘
~6/5 (315.64c ──────┘
~11/9 (347.41c) ──────────┘
~16/13 (359.47c) ──────────────┘
~64/51 (393.09c) ──────────────────┘
~81/64 (407.82c) ──────────────────────┘
Figure 13: Approximated Thirds on the QŒn´n of Aleppo.
It should be mentioned that the distribution of micro-steps on this model does not neatly
conform with the ultra-Pythagorean tuning system of ‘alī al-Darwīš (D’Erlanger 2001-V:29,
fig.9):
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
12
~16000/15580 (46.05c) ──┘
~256/243 (90.23c) ────────┘
~2187/2048 (113.69c) ───────────┘
~ 35073/32000 (158.75c) ───────────────┘
~9/8 (203.91c) ───────────────────────────┘
Figure 14: Minor to Major Seconds According to the Tuning Theory of Šayĥ ‘alī al-Darwīš.
While the mandal-s rely on the tempered semitone, the fundamental heptatonic scale was, in
practice, tuned by ear upon Pythagorean ratios, in “unequally Pythagorean temperament”
(Weiss 2004). As its division of the semitone was built systematically upon musically
meaningful interval sizes, this system offered, at the time, the most rational qānūn. The
following representation, again, show the resulting ratios, whether the instrument was tuned
upon C or upon B flat:
18/17 (98.95c ─┘ 15/14 (119.44c) ───┘
88/81 (143.5c) ──────┘
128/117 (155.56c) ───────┘
512/459 (189.18c) ───────────┘
9/8 (203.91c) ────────────────┘
81/68 (302.86c) ───────────────────┘
135/112 (323.35c) ──────────────────────┘
11/9 (347.41c) ───────────────────────────┘
16/13 (359.47c) ───────────────────────────────┘
64/51 (393.09c) ───────────────────────────────────┘ 81/64 (407.82c) ──────────────────────────────────────┘ 4/3 (498.05c) ───────────────────────────────────────────┘
Figure 15: The Fourth on the Qānūn of Aleppo, Based on ‘aĝam in C.
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
13
18/17 (98.95c ─┘ 16/15 (111.73c) ───┘
88/81 (143.5c) ──────┘
128/117 (155.56c) ───────┘
512/459 (189.18c) ───────────┘
9/8 (203.91c) ────────────────┘
32/27 (294.14c) ───────────────────┘
6/5 (315.64c) ────────────────────────┘
39/32 (342.48c) ───────────────────────────┘
27/22 (354.55c) ───────────────────────────────┘
5/4 (386.31c) ───────────────────────────────────┘ 398c ───────────────────────────────────────────┘ 4/3 (498.05c) ───────────────────────────────────────────┘
Figure 16: The Fourth on the Qānūn of Aleppo, Based on ‘aĝam in B Flat.
This highly sophisticated pitch supply was designed in order to respond on the specific local
tuning customs of Aleppo. The semitone 18/17, thus, serves for the Aleppian understanding of
the third in genre Nahāwand in F (81/68), the harmonic semitone 16/15 for genre Hiĝāz in G;
88/81 was used in Bayātī in G, 128/117 for Rast in F (16/13), 512/459 for the third of Hiĝāz
in F (64/51).
The Turkish Qānūn
This model, standardized in modern Turkey, uses twelve mandal-s (= 13 pitches) per course
of strings while at least one pitch is shared with the next adjacent string and distributed 72
notes within one octave mechanically onto the heptatonic frame tuning. The tempered
wholetone is neatly divided into two tempered semitones:
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
14
n � � � � � � � #
� 200c ┌─────────────────────── = ─────────────────────┘ �
└ ~17c ─┴ ~17c─┴ ~17c ─┴ ~17c ┴ ~16c ┴ ~16c ┴ ~17c ─┴ ~17c─┴ ~17c ┴ ~17c ┴ ~16c ┴ ~16c ┘
└───────── 100c ───────┴─────── 100c ────────┘
Figure 17: Aliquot Division of the Tempered Apotome on the Turkish QŒn´n. C and D Strings.
In case that the heptatonic frame of the instrument is tuned upon Pythagorean intervals – and
by means of melodic scale steps –, this distribution could be explained upon the following
ratios:
└───── 18 ────┴──── 17 ─────┘
└───── 17 ────┴──── 16
└─────────── 9 ────────────┘
└───── ────── 8
98.95c 105.44c
Figure 18: Approximation of Harmonic Ratios on the Turkish QŒn´n.
Due to the equidistant array of the bridges next to each course of strings, a slight aliquot
division from one end of a semitone to another must be accounted:
102 x 101 x 100 x 99 x 98 x 97 101 100 99 98 97 96
└─────────────────── 18 ─────────────────┘
└─────────────────── 17
98.96c └───────────────
b � � � � � � � n
Figure 19: Aliquot Division of the Tempered Apotome on the Turkish Qānūn. Approximation with 18/17.
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
15
The following representation shall give an impression of the Pythagorean and harmonic ratios
that are closely touched by this system:
Pythagorean and Harmonic Ratios
ratios (sums) 256 15 13 12 11 10 9 32 6 39 27 99 5 81 4 243 14 12 11 10 9 8 27 5 32 22 80 4 64 3
cents 9 0.23 119.44 138.57 150.64 165.0 182.0 203.91 294.14 315.64 342.48 354.55 368.91 386.31 407.82 498.05
Tempered Turkish Qānūn
cents 100 117 134 151 168 184 200 300 317 334 351 368 384 400 500
Figure 20: Division of the Fourth: Comparison of Ratios from the Theoretical Tradition with
Approximate Interval Sizes on the Turkish Qānūn.
The Prototypes of Julien Jalâl Ed-Dine Weiss
In 1990, together with his first custom-built qānūn, Julien Jalâl Ed-Dine Weiss also invented a
reliable notation system, based on accidentals that appear prominently in Arab, Turkish, and
Persian theories. They relate the 14 mandal-s of his system with specific interval ratios:
Figure 21: Weiss’ Specified Mandal Notation With this notation, all so far accounted tuning systems are included and coexist in a broader
concept of acoustic and theoretical derivation. For example, Weiss is able to play subtle
distinctions such as the schisma between an F flat and an E natural that appear at exactly the
right places on his heptatonic frame and are justly tuned. Both the Pythagorean (2187/2048)
and the harmonic (16/15) aptome can be provided, each at its specifically assigned place. The
augmented prime signifies the Pythagorean apotome (2187/2048), a minor second the
Pythagorean limma that, which 90.23c, is by one Pythagorean comma smaller. In comparison,
Arel-Ezgi,Uzdilek, in their today standardized Turkish notation system, confounded this
theoretical distinction by equating the one with the other and relying on a tempered keyboard
rather than on acoustic evidence:
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
16
Arel-Ezgi-Uzdilek (Modern Turkey) Weiss
└── 256──┘ └── 256─┘ └──2187─┘ └── 256─┘ 243 243 2048 243
90.23 c 90.23 c 113.69 c 90.23 c
Figure 22: Minor and Major Semitone. Comparison between the Notation Systems of Arel-
Ezgi-Uzdilek’s and Weiss.
Weiss divides each course of strings upon twice the Pythagorean apotome. The symmetrical
distribution of the following fig. 23 applies to all prototypes that have been built to this day:
┌──┬────────────────┬──┬──┬────────────────┬───┐
ratios 81 25 (“Zarlino semitone”) 81 81 25 (“Zarlino semitone”) 81 80 24 80 80 24 80
cents 21.51 70.67 22.51 21.51 70.67 21.51
└──┴────────────────┴──┴──┴────────────────┴───┘
└──────── 135/128 ─────┘ └──────── 135/128──────┘
└───────135/128 ───────┘ └───────135/128 ────────┘
└───── 2187/2048 ≈ 113.69 ct.────┴───── 2187/2048 ≈ 113.69 ct. ────┘
2x the Pythagorean apotome
Figure 23: Weiss’ Qānūn Systems – Basic Division of the Pythagorean Apotome.
System 1 was conceived in 1990 and built by the Đzmir-based instrument-maker Ejder Güleç,
explicitly for performances with Weiss’ “Al-Kindi” ensemble in Arab contexts. The first half
of the D course in the following table describes an almost perfect series of harmonic ratios:
Table 4: Weiss’ Qānūn System 1 – Ratios on the D String in Regard to C Natural
cents: 21.51 14.2 12.65 12.06 14.37 17.4 21.51 21.51 14.2 12.65 12.06 14.37 17.4 21.51 ratios: 256 16 784 13 12 11 10 9 729 147 9477 6561 24057 1215 19683 su 243 15 729 12 11 10 9 8 640 128 8192 5632 20480 1024 16384
cents: 90.23 111.73 125.92 138.57 150.64 165.0 182.4 203.91 225.41 239.61 252.62 264.32 278.89 296.09 317.6
Eight instruments in different sizes were constructed upon this system until Weiss, in 2007,
conceived a slightly different tuning that, by simply reversing the interval ratios of the first
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
17
system, should primarily serve the interpretation of the Ottoman-Turkish repertoire. This new
prototype was built by the Đstanbul-based instrument-maker Kenan Özten:
Table 5: Weiss’ Qānūn System 2 – Ratios on the D String in Regard to C Natural
cents: 21.51 16.57 15.2 12.06 12.35 14.49 21.51 21.51 16.57 15.2 12.06 12.35 14.49 21.51
ratios: 256 16 14 88 128 119 10 9 729 23 297 243 273 1215 19683 m ratios: 243 15 13 81 117 108 9 8 640 20 256 208 232 1024 16384
cents: 90.23 111.73 128.3 143.5 155.56 167.92 182.4 203.91 225.41 241.96 257.18 269.25 275.38 296.09 317.6
Tables 6 and 7 show the full range of the microtonal pitch supply that both systems offer. In
reconciling theory and practice in a, finally, acoustically consistent approach, Weiss’ qānūn
models could be compared to Dimitrie Cantemir’s tanbūr from the 17th century (Feldman
1996:206 et seqq.). They reflect various aspects of Near-Eastern tuning customs, modal
genres, and pitch supply both from an historic and contemporary viewpoint.
Table 6: Weiss’ System 1 – Available Pitch Content per Octave in Relationship to C Natural.
DO
2048 2187
113.69c
128 135
92.18c
2560 2673
74.78c
704 729
60.41c
1053 1024
48.35c
48 49
35.70c
80 81
21.51c
1 1
0
81 80
21.51c
49 48
35.70c
1053 1024
48.35c
729 704
60.41c
2673 2560
74.78c
135 128
92.18c
2187 2048
113.69c
RE
256 243
90.22c
16 15
111.73c
784 729
125.92c
13 12
138.57c
12 11
150.63c
11 10
165.00c
10 9
182.40c
9 8
203.91c
729 640
225.41c
147 128
239.60c
9477 8192
252.26c
6561 5632
264.32c
24057 20480
278.68c
1215 1024
296.09c
19683 16367
319.39c
MI
32 27
294.14c
6 5
315.64c
98 81
329.83c
39 32
342.48c
27 22
354.55c
99 80
368.91c
5 4
386.31c
81 64
407.82c
6561 5120
429.32c
1323 1024
443.52c
85293 65536
456.17c
59049 45056
468.23c
216513 163840
482.59c
10935 8192
500c
177147 131072
521.51c
FA
8192 6561
384.36c
512 405
405.87c
25088 19683
420.06c
104 81
432.71c
128 99
444.77c
176 135
459.13c
320 243
476.54c
4 3
498.05c
27 20
519.55c
49 36
533.74c
351 256
546.39c
243 176
558.46c
891 640
572.82c
45 32
590.22c
729 512
611.73c
SOL
1024 729
588.27c
64 45
609.78c
3136 2187
623.97c
13 9
636.62c
48 36
648.69c
22 15
663.05c
40 27
680.45c
3 2
701.96c
243 160
723.46c
147 96
737.65c
3159 2048
750.30c
2187 1408
762.37c
8019 5120
776.73c
405 256
794.13c
6561 4096
815.64c
LA
128 81
792.18c
8 5
813.69c
392 243
827.88c
13 8
840.52c
18 11
852.59c
33 20
866.96c
5 3
884.36c
27 16
905.87c
2187 1280
927.37c
441 256
941.56c
28431 16384
954.21c
19683 11284
963.21c
72171 40960
980.64c
3645 2048
998.04c
59049 32768
1019.55c
SI
16 9
996.09c
9 5
1017.6c
49 27
1031.79c
117 64
1044.44c
81 44
1056.5c
297 160
1070.87c
15 8
1088.27c
243 128
1109.78c
19683 10240
1131.28c
3969 2048
1145.47c
255879 131079
1158.03c
177147 90112
1170.19c
649539 327680
1184.55c
32805 16384
1201.95c
531441 262144
1223.46c
DO
4096 2187
1086.31c
256 135
1107.82c
5120 2673
1122.01c
52 27
1134.66c
64 33
1146.73c
88 45
1161.09c
160 81
1178.49c
2 1
1200c
81 40
1221.51c
49 24
1235.70c
1053 512
1248.35c
729 352
1260.41c
2673 1280
1274.78c
135 64
1292.18c
2187 1024
1313.69c
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
18
Table 7: Weiss’ System 2 – Available Pitch Content per Octave in Relationship to C Natural.
DO
2048 2187
113.69c
128 135
92.18c
232 243
80.2c
26 27
65.34c
32 33
53.27c
1664 1701
38.07c
80 81
21.51c
1 1
0
81 80
21.51c
1701 1664
38.07c
33 32
53.27c
27 26
65.34c
243 232
80.2c
135 128
92.18c
2187 2048
113.69c
RE
256 243
90.22c
16 15
111.73c
14 13
128.29c
88 81
143.49c
128 117
155.56c
119 108
167.92c
10 9
182.40c
9 8
203.91c
729 640
225.41c
15309 13312
241.98c
297 256
257.18c
243 208
269.25c
9639 8192
281.60c
1215 1024
296.09c
19683 16367
319.39c
MI
32 27
294.14c
6 5
315.64c
63 52
332.21c
11 9
347.41c
16 13
359.47c
119 96
371.83c
5 4
386.31c
81 64
407.82c
6561 5120
429.32c
137781 106496
445.89c
2673 2048
461.09c
2187 1664
473.16c
86751 65536
485.51c
10935 8192
500c
177147 131072
521.51c
FA
8192 6561
384.36c
512 405
405.87c
448 351
422.43c
2816 2187
437.63c
4096 3159
449.7c
952 729
462.05c
320 243
476.54c
4 3
498.05c
27 20
519.55c
567 416
536.12c
11 8
551.32c
18 13
563.38c
357 256
575.74c
45 32
590.22c
729 512
611.73c
SOL
1024 729
588.27c
64 45
609.78c
56 39
626.34c
352 243
641.54c
512 351
653.61c
119 81
665.96c
40 27
680.45c
3 2
701.96c
243 160
723.46c
5103 3328
740.03c
99 64
755.23c
2187 1404
767.29c
3213 2048
779.65c
405 256
794.13c
6561 4096
815.64c
LA
128 81
792.18c
8 5
813.69c
21 13
830.25c
44 27
845.45c
64 39
857.52c
119 72
869.87c
5 3
884.36c
27 16
905.87c
2187 1280
927.37c
45927 26624
943.94c
891 512
959.14c
19683 11232
971.20c
28917 16384
983.56c
3645 2048
998.04c
59049 32768
1019.55c
SI
16 9
996.09c
9 5
1017.6c
189 104
1034.16c
11 6
1049.36c
24 13
106143c
119 64
1073.78c
15 8
1088.27c
243 128
1109.78c
19683 10240
1131.28c
413343 212992
1147.85c
8019 4096
1163.05c
6561 3328
1175.11c
260253 131072
1187.46c
32805 16384
1201.95c
531441 262144
1223.46c
DO
4096 2187
1086.31c
256 135
1107.82c
672 351
1124.39c
4224 2187
1139.59c
12288 6318
1151.65c
476 243
1164.01c
160 81
1178.49c
2 1
1200c
81 40
1221.51c
1701 832
1238.07c
33 16
1253.27c
27 13
1265.34c
243 116
1280.2c
135 64
1292.18c
2187 1024
1313.69c
Figure 24: Weiss’ Qānūn Nr. 9, System 2
Mikrotonalität. Praxis und Utopie, Walter C-J. & C. Pätzold (Hg.), Stuttgart: Schott, pp. 202-18
19
Figure 25: Weiss’ Qānūn Nr. 9, System 2, Mandal-s
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