3 weeks ago, a petition calling for a ban on loud music was handed to Transport for London.
A word in favour of in-head music.
One symptom of Sennheiser's Syndrome is a feeling of complete goodwill towards those around you. The effect of hearing a favourite piece of music seems to act in the same way as a movie soundtrack, enhancing the 'visuality' of what you see. And if what you see are rows of faces, they begin to gain humanity, the narrative of the music means you look at people in a different way. They acquire stories of their own, becoming individuals, as opposed to the usual anonymous stream of potentially hostile competitors you were once used to.