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Flash-MX pretty much said exactly what I wanted to say, but another little scale to try out is the "arabic" scale that fl studio claims in its arpegiiator....i dont use that function but in semitones it goes
1-2-1-2-1-5
yea...it jumps a p4...its strange, but it works. I use it in 3 of my pieces if you want an example of using it in context--they are called "Desert Spirit", "Poly Insanity", and "The Jungle Tribe" (im not trying to whore just trying to provide context)
But yea emotionally the melody doesnt fit for a desert or eastern feel. You may also be interested in Cartanic music which is Indian style eastern music. They use 72 different melakartas raagas which are each scales. Very cool stuff cartanic music theory. All based on connecting to the different charkras in our bodies to evoke certain emotions and spirits.
BTW I still enjoyed the cinematic feel to this. Definitely reminds me of James Hoerner music.
Cheers!