Hello, I think your theory is really interesting! I'm curious about what you have to say about instrumental music, specifically orchestral pieces. Though those songs often don't have lyrical content, they're able to convey messages. Or at the very least, it seems to me that people have derived more than just emotional meaning from songs like Holst's planets symphony, Vivaldi's four seasons, and even simpler pieces like Grieg's in the hall of the mountain king. These pieces seem to denote an actual story conveyed through instrumentation alone. Do you think composers can actually try to put meaningful messages in the score, this is just us projecting emotionally, or is this wrapped up in your idea of our tastes in music being "idiosyncratic and culturally bound"? Sorry for any misunderstanding I may have had reading!