difference between western and eastern music is the instrument player can superimpose their feeling without changing a note in eastern music, I like that! makes the music sound different every time you listen to it, depending on the mood and how good the player is
That's not actually the answer you're looking for. Indeed, the song is Egyptian, but the "oud" instrument itself is of a different origin and, unfortunately, in these days, every countryman will tell you it originates from their country. Truth is, the Arabic "oud" is derived from Syriac "oud-a", meaning "wooden stick" and "burning wood" (which is cognate to Biblical Hebrew "ud", that is referring to a stick used to stir logs in a fire.)