Listening to this lecture, it was pretty scary to know that head phones can damage ones ears so much. When I listen to music I put the music quite loud so I'm slightly worried... But the thing is that if your on a train you have to turn the music up because of the sound coming from the train.
Nowadays it seems like we are always surrounded by music. I sometimes go to "pachinko" and when I come out my ears are always pretty much buzzing. Tokyo is a very nice city but in some places it seems to loud.