Research->Genre Study->Ethnic Music->Aboriginal 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 Aboriginal Music
Aborigines are native people in Australia. They play music using Didgeridoo that is their traditional instrument. This instrument is a wood pole that has a hole in its center. Ants make this hole by eating its center. When bless is input to this hole, it sounds like ?gDiyoyoyooon.?h Many intervals can be made, but there are no musical scales used. There are no drums in aboriginal Australia, so they hit Didgeridoo by wood and make rhythmic sound. 
There are no Didgeridoo sound in GM and XG. Therefore, the Automated Composing System simulates this sound by using another instrument. To simulate sound, very short note are repeated, so some PCs may not make any sound. GS includes a Didgeridoo. So if your system is GS, this is used. Woodblock is used for rhythm. 
Sample by Automated Composing System
Music Scale
Didgeridoo, wood block(?)
Links to related topics
Information is wanted!