Minor Keys Are Just as Imajor as Typical Speech

Major versus minor key associations could have to do with speech. Minor keys and sad speech both contain pitches that violate expectations by being lower than normal. But there's another aspect here that i think is probably much clearer, when you 're looking for biological reasons why we might associate certain kinds of sounds or music with fear. And this would be a mimicry of sounds that are produced in our ancestral environment, or by our ancestors themselves.