One thing I meant to add but forgot is the best way I can think to explain the effects of music in our minds and our ability to recall long sequences of notes is that human composed music is telling us a story that our brains already know.
Four four common time replicates the heartbeat and natural bodily rhythms but that does not really explain why music can so successfully alter emotional state in the listener. I think it is not really known why other than music connects with and is readily understood by organic brains, not just human in a very intimate way. For example a five minute piece of classical music is informationally very complex but a person is often able to hum it back after a single hearing and do so again years later. Repeating verbatim a five minute speech listened to is beyond most people and so it might be suspected that music is more native to the brain than is language.
Everyone has sippy bottles now but when I was young in the late 70s we played out all day and did not drink for 7 hours at a time and no one died. Alright one person died but mainly not.
Women are more worried about the economy under Trump than they are about men or than men are worried about the economy under Trump, this is typical of a poll. Phrasing.
As horrible and insane as it all is increasing civilian proportions in conflict death statistics is likely the future as infantry are side stepped by advances in drone, missile and other fighting at a distance technology.
I don't understand the emphasis on biology, it is a potential area of concern admittedly but only one of a great many. It sounds like someone's personal idiosyncratic fear of disease.
Simple, honest, fair reporting.