Rast (Arabic maqam)
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Rast is the implementation of the Rast maqam in Arabic maqam theory. Its formal account is in 24 Tone Equal Temperament, but according to some musicologists, there are slight variations in practice.[1] Rast is similar to a major scale, with the exceptions of half-flat third and sixth degrees in the ascent.
The Rast ascending scale consists of the combination of two Rast tetrachords:
- 1: Tonic note
- 2: Major second
- 3: Neutral third
- 4: Perfect Fourth
- 5: Perfect Fifth
- 6: Major Sixth
- 7: Neutral Seventh (In Rast descending, it is Minor Seventh instead)
- 8: Octave