Rast pitch class set

The Rast pitch class set is a set of scales that are named after the Rast makam. For Rast, there is the Rast tetrachord and Rast pentachord.

It is used as a Çeşni in many makams.

Rast tetrachord and pentachord in 53-TET

The intervals of the Rast tetrachord and Rast pentachord within 53 Tone Equal Temperament are given in the table:

Rast pitch class set

Pentachord	Tetrachord	Note order	Step to next note (Number of steps)	Note name starting from Rast[1]
Rast pentachord	Rast tetrachord	1	T (9)	Rast
		2	K (8)	Dügâh
		3	S (5)	Segâh
		4	T (9) (Only for pentachord)	Çârgâh
	-	5	-	Neva

Makams that use the Rast pentachord or Rast tetrachord

Name of Makam	Lower Çeşni	Higher Çeşni		Notes
Rast Ascending[2]	Rast pentachord	Rast tetrachord
Acemli Rast (Same as Rast Descending)	Rast pentachord	Buselik tetrachord
Basit Suzinak[3]	Rast pentachord	Hicaz tetrachord
Nikriz	Nikriz pentachord	Rast tetrachord	Buselik tetrachord