2 Quite so! Our voice has a huge power to influence our interlocutor's brain.
But contrary to your words I don't like when a guy is singing in my ear while we are dancing ;))
4 Sometimes a person has so mellow voice, that whatever he speaks it's so pleasant to listen to him/her! But there are cases when the voice is so disgusting, that adds to your decisioon to stop relationships with a person...
1 Oh, you are right!.. The voice of your man can be so.. thrilling! And when he has really sexy voice, he can charm you even with the only word ;)