Music Structures

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A jins (Arabic: جنس; plural ajnās, اجناس) 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.

The word derives from the Greek word genus, meaning "type."