Fascinating stuff! But why are so many video clips of this kind accompanied by irrelevant musical backing? Are interested viewers incapable of listening to a co

Fascinating stuff! But why are so many video clips of this kind accompanied by irrelevant musical backing? Are interested viewers incapable of listening to a commentary without added garbage. I use the word because it is indeed a useless addition to the presentation. Or is it there to test my powers of concentration? I don't think so.