Hey there! I'm a research biologist, but not working in neuropsych. As far as I have read (which is not all that much) the relationship between musical styles & progressions and enjoyment is largely based on a sense of familiarity and a *sub-conscious* ability to anticipate music. I know that a lot of us like music which surprises us, however I'm talking about sub-conscious recognition and anticipation, rather than conscious. This explains why some forms of music which are totally grating to are enjoyable to peoople from other cultural backgrounds.

Cheers

Al