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Descending tetrachord


In music theory, the descending tetrachord is a series of four notes from a scale, or tetrachord, arranged in order from highest to lowest, or descending order. For example, scale degree 8-scale degree 7-scale degree 6- scale degree 5, as created by the Andalusian cadence. The descending tetrachord may fill a perfect fourth or a chromatic fourth.


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