Jins

For the Hindu chakra, see Ajna.
Ajnas (the equivalent of modern-day modes) in old Persian traditional music. Originally by Abd al-Qadir Maraghi, as published in the book by Farhad Fakhreddini.

In traditional Arabic music theory, a jins (Arabic: جنس, pl. أجناس, ajnās) is a set of three, four, or five stepwise pitches used to build an Arabic maqam, or melodic mode. They correspond to the English terms trichord, tetrachord, and pentachord. A maqam is made up of two or more ajnas.