While trying to determine the veracity of that monkey-brain-video-game allegation, I found this article.
http://www.dukenews.duke.edu/news/newsrelease.asp?id=2653&catid=2,46&cpg=newsrelease.asp

Part of it says ...Catherine Howe and Dale Purves have presented evidence that variation in the relative harmoniousness, or "consonance," of different tone combinations arises from people's exposure to the acoustical characteristics of speech sounds. ...

the points at which sound energy is concentrated in the speech spectrum predict the chromatic scale -- the scale represented by the keys on a piano keyboard.

I also like this:
Those studies of vision led to the idea that evolution -- as well as individual experience during development -- created a visual system in which perceptions are determined by what a given visual stimulus has typically signified in the past, rather than simply representing to an observer what is presently ‘out there.’