here is some information abou this kind of music!
There are a lot of diffrences between Iranian music and the classic one!
As you know we have just 12 tones in classic music.but in Iranian's there are some another kind of tones names "coron".this symbols make the distance shorter between the tones.
Another point about this kind of music is the Octaves.In Iranian music we have some musical Mechanism calls "Dastgah"that classic music doesn't have that!Like Isfahan and Mahoor and Shoor or .....
Instruments in this kind of music are diffrent.they are the oldest musical instrument in all over the world!And most of'em are stringly.like Setar, Santur, Tar, Tanboor and ....
There are some documents that show that Guitar is an Iranian instrument.
the name of instrument shows this = Gui + tar."Tar" is an Iranian word means
String and it used for naming an Instrument!!!