Even music "in and of itself" says something about the perception of sound. Note that I am talking specifically about "awareness." Not politics or philosophy. If you are a refined listener, then you are aware of these things on at least a subconscious level. I also hate it when artists and musicians spout muzzy-headed nonsense. But there are others who have had their awareness informed by what they practice. Sometimes they even have something good to say in interviews. Sturgeon's law applies here as well.