How much is our reaction to music innate and how much is learned?

[RupeeRoundhouse]

For example, minor keys typically evoke drama and/or melancholy. In other words, why do minor keys evoke the emotionss they do?

I’d like to find a tribe of people who haven’t been exposed to minor keys. Perhaps playing them music in minor keys would provide interesting data on whether the emotions evoked by minor keys are innate or learned.