The mood changes. Why does that happen? Today we went to the park. It’s Halloween. There was a cement area with a white oval painted. People in costumes were roller skating around the circle. There were two particular skaters who were quite good. They were dressed as a pirate and a bumble bee. A large speaker in the center of the oval played disco music. We watched them dance—spinning in circles, standing up on the toes of their skates, bending low. And then the music stopped. They kept dancing, but less passionately, and it wasn’t the same. For us watching, the dancers now seemed out of place. But why? Where is that place that music takes us?