San Jose requires builders to purchase art
This sounds weird put this way but an article I ran across made an interesting point, that some art and artists became popular because certain individuals would associate sounds with certain visual elements. This condition is called synesthesia. Synesthesia is a neurological condition in which two or more bodily senses are coupled. I found a lot of information on this at the synesthesia wikipedia article.
The news article made reference to Kandinsky saying his artworks could be “heardâ€. All of humans use a form of unconscious association but some see actual color when they hear music or hear music when they see certain things.