When people start dancing, a kind of ownership ritual takes over. They’ve marked out their own physical space: it now belongs to them. Likewise, they’ve started to take ownership of the music they’re hearing. They don’t want it to stop. After imitating other people for most of the day, or week, or year—their mothers or fathers or supervisors, their smarter or more beautiful acquaintances—finally they’re playing themselves, in whatever form they want. They can be as free as they want, as elegant or debased as they want.