Fair enough, and I shouldn't just knock it without even reading carefully. It's frustrating sometimes to see discussions like these that seem to completely ign

Fair enough, and I shouldn't just knock it without even reading carefully. It's frustrating sometimes to see discussions like these that seem to completely ignore the very wide variety of sounds that people find pleasant. I've perhaps read too many claims that "music is a universal language" when it far from that. You should search out some recordings; I played in a gamelan ensemble for a while and quite enjoyed it. The sound is cool, and the interlocking rhythms do neat things in your head. :) The beats -- I'm not sure if they're rapid enough to qualify as "roughness" or not; I've never encountered that term before, but they're fairly rapid and give a shimmering effect.