synesthesia and art - Google Search
I do think we're all this way to some degree, yes. And that's our common humanity. This is my actual interest in the subject. It does seem to me that the limitations we place upon ourselves as a result of what is called, "adaptation" or "entrainment," cultural bias, and fear eventually separate us from most of our native potential. What remains is often thought of as "sanity" but a reading of human history belies this simplistic notion.
I like to think that, when it does come down to a matter of existential choice (which is very rare, I know) we would choose to be more open to the deeply interconnected nature of all experience.