With drums, the percussion sound carries very well. Different cadences were used to communicate different things. In modern warfare, the generals sit in bunkers and watch television screens sent information from satellites. It used to be that the generals sat on a hill on the battlefield and gave commands that were communicated to battlefield officers via different drum cadences. Especially when gunpowder got to be used more and more, leaving the battlefield officers literally in the "fog of war". There were different cadences for withdraw, advance, flank right, flank left, etc. and so forth. They could be heard by the soldiers on the field of battle even above the screams, guns, explosions, and general confusion. That's a western thing. Don't know if it's also true for African drum use in battle. Many thanks that I have never had to learn first-hand.
I had thought that music resided in the brain somewhere between language and mathematics, somewhat linking the two in use and thereby advancing both language and mathematics functions. It has been shown that students who study an instrument tend to perform better, but I am not aware of whether that is because students who would tend to do better anyway because of socio-economic or other characteristics tend to study music or vice-versa.
- Zurf
Granted B chord amnesty by King of the Mutants (Long live the king).
If it comes from the heart and you add a few beers... it'll be awesome! - Mekidsmom
When in doubt ... hats. - B.G. Dude