Two strangers sitting behind me on the train (not together) each listening to their own music on headphones, that is loudly leaking out in a high pitched discordant hellscape. Why don’t people check their music isn’t audible to others in the vicinity? Or do they just not care?
I know I don’t have the right to complain if I’m not prepared to ask them to turn it down but unfortunately I’m a wuss. Admittedly this is one of my pet peeves, I can cope with crunching/rustling and eating and drinking sounds but not this