Rast comes from old Persian and means "straight", also "straightforward", or "easy".
So in other words, Rast is Rast.
I have a completely outlandish and unsubstantial theory that Rast was the original proto-mode from which all other modes derived. Yegah, dugah, segah,
chahargah, panjgah, sashgah, haftgah. 1st position, 2nd position, 3rd position, 4th position, etc. These positions are associated with the degrees in
the scale and could be modulated to, and after shifting the tonal center to that new position, you could create other modulations from that new
position depending on the anatomy of the instrument and established convention and repertoire.
So I think Rast encompasses the intervallic structure that form the basis of many maqamat and that is what makes it the proto-mode and a kind of
super-interchange that connects you to other ajnas. |