A few years back, I was out with some friends - one's a drummer. We were sitting there, in a nightclub, drinking our way through the evening when the DJ mixed

A few years back, I was out with some friends - one's a drummer. We were sitting there, in a nightclub, drinking our way through the evening when the DJ mixed tracks with different rhythms and time signatures. The one thing that sticks in my mind about it was his physical shudder as it happened.