Confused, I look at someone with headphones on, I can hear the beats of their songs, yet they aren't moving. It seems that the act of moving to music through headphones is relegated to those who identify with what is known as a lower-class trend. I say that because, in my experience, all who moved to their music on public transport (in public but not on a dancefloor) were the sorts you could imagine knew, liked and hung out with 'black' people - and all of those who didn't, were not.