Research->Genre Study->Ethnic Music->Andes Music
What is ethnic music? What element distinguishes an ethnic music style from other ethnic music styles? For example, what is the difference between Okinawa music and Scotland music? I think elements of music are (1) melody (scale), (2 ) chord, (3) rhythm, and (4) instruments. 
First, let's think about melody. Rock and Blues are easy examples, even though they are not ethnic music. Rock uses normal music scale while Blues includes blue-notes in its music scale. Next, think about chords. Rock uses simple chords (triad) while Jazz includes 7th in its chords. Chord progression of Jazz is more complicated than that of Rock as well. For rhythm, Rock uses 8 beat, Fusion uses 16 beat, Jazz uses 4 beat. Finally, think about musical instruments. It is easy to see differences between Classical music and Rock music. Especially, musical instruments are important elements of ethnic music, since each country has different music instruments. 
I am trying to capture features of each ethnic music style based on this idea, and to reproduce them with automated composing system. This page includes considerations that I faced when I embedded functions of ethnic music composition.
About Andes Music (Peru, etc...) 
Andes area includes Peru, Bolivia, Chile, and etc. Each country has different traditional music. Musical instruments and costume are very characteristic. You may have seen artists wearing ethnic costume and playing music of Andes at tourist sites. Their famous tune is "El Condor Pasa." 
"Automated Composing System" employs penta-tonic of "D", "F", "G", "A", "C" as music scale. And it uses "Shakuhachi" and "Breath noise" for quena and panpipes. Guitar is used for backing. Congas and Toms are used for Rhythm part. This function of the system needs some improvement and I will do it someday. 
Sample by Automated Composing System
Scale (example)
Music Scale "C", "D", "F", "G", "A" 
Quena, Panpipes, and others (See links)
Links to related topics
Although "El Rincon Musical Peruano" is Spanish site, it contains some MIDI files such as "El Condor Pasa." If you want to have some information about musical instruments, please visit Chaski's site.