This is the first mode of main modes in mugham which kept its base and root, unchanged its function during the historical period of development.
Rast mode consists of 1+1+0.5 tone, which is created in three tetra-chords in the result of amalgamation of reach method of the first main tetra-chord.
[1] Literarily, Rast creates courage and cheerfulness at listener.
Subgenres of Rast are: Bardasht (with Novruzu-Ravanda), Maye, Ushshag, Huseyni, Vilayati, Dilkesh, Kurdu, Shikasteyi-fars (Khojasta), Erag, Penjgah, Rak-Khorasani, Gerai, space for Rast.
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