In order to perform a Dastgah or Awaz, a special order must be followed and that is; prelude, Awaz, Tasnif (song) and Reng (dance tune). Maestro Darvish Khan Innovated and added Plshdaramad (what comes before the prelude) and Chahar Mezrab to this order. 

Iran's Folklore Melodies
Roohollah Khaleghi said in this regard," One of the valuable sources of music in every country is the music and melodies played and sung by the rural people who live in villages far from the cities. And since the urban people have less influenced their music and songs, they are more natural and original and are closer to the country's ancient and authentic music. Collecting such music not only preserves It, but also gives us more information about a country and the way Its people live." As Iran has different tribes with different cultures, its folklore musk enjoys a vast variety, both in the songs and the music.

For Instance, the music of Gilan, Azarbaijan, Khorasan. Kordestan, Shiraz, and Baluchistan have different melodies and accents. Iran's folklore music has two forms:

1) Local melodies, which are sung by one person or by a group.

2) Local dances which native musical instruments accompany.

Iran's local melodies are one of the richest, most beautiful and most various among the folklore melodies in the world. These melodies reflect the thoughts, lives, and nature of the people who have created them. They are one of the rich cultural sources of Iran and can be the best inspiration for our musicians to compose scientific music.