With the advent of Islam in the 7th century A.D., Persian music, as well as other Persian cultural elements, became a formative element in what has since become "Islamic civilization". Persian musicians and musicologists overwhelmingly dominated the musical life of the Eastern Islamic Empire. Baghdad became the centre of Persian music, and many musicians who were once considered to be Arabs are actually now known to have been Iranians. Farabi (d. 950), Ibn Sina (d. 1037), Razi (d. 1209), Ormavi (d. 1294), Zalzal (d.791), Ziryab, and Maraqhe-e (d. 1432) are a few of the many outstanding Persian musical scholars of the early Islamic period.