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Mansour Zalzal, was an Arab Musician and composer of Al-Kufa during the Abbasid era. Contributed musical scales that were later named after him (the Mansouri scale, Arabic,المقياس المنصوري) and introduced positions (intervals) within scales such as the wasati-zalzal.
Mansour Made improvements on the design of the lute instrument. Mansour was the Teacher of great musician Ishaq al-Mawsili.