Sometimes Eviç note is used instead of Acem. It is called as Acemli Rast scale.
Musical development; starts from around Rast note. Its following modulations can be made; Uşşak on Dügah, Ferahnak on Segah, Uşşak on Hüseyni Aşiran, Segah on Segah. Tonic is Dügah, Segah, Hüseyni Aşiran, Segah and Neva. The final tone is Rast after the leading tone Irak.