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start:
09 january 2007, up-date: 09 january 2007
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| Safi al-Dîn divides these kinds into three, as major consonant, mid consonant and weak consonant ones. The first one of the kawî kinds is the most consonant, the most well known and the most used one with its six classes. |
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36
classes of layyin (râsim, lawnî,
nâzim classes) are weak harmonious. They are not used. Safi al-Dîn
points out that the tetrachord with 9/8x9/8x256/243 (diatonic) ratio is
mostly used. He also explains that it is also possible for the person
studying into this letter to arrange many kinds out of the ones he himself
arranged. (8)
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