Why does music have such a powerful psychological hold on us?
You can read a book or a newspaper, and you will indeed receive information. But if you hear the same thing in a well-crafter song, you may end up embracing it as a core tenet of belief.
I believe that this reflects an evolutionary imperative. Clearly music had an advantage to proto-humans first emerging into the world.
And all of us reap the benefit of that evolutionary legacy.