Azam Nemati writes: "Classical Music of Iran: The Dastgah Systems" (produced by Smithsonian Folkways in 1991) has stunning performances by some of Iran's finest musicians. Recorded before 1979 Iranian Revolution that drove many performers into exile, this represents some of the best Iranian classical music. It includes recordings of ten of the twelve dastgah, or tone sets performed on tar, santour, drum, flute, violin and voice. Compiled by Ella Zonis Mahler with Technical assistance of Ruhollah Khaleghi