Soul isn't a feeling, a sound or a movement. It's a connection, a current in the air -- the spark of recognition, emotions leaping across live wires. It's the way a sinewy bassline steers your hips and eyes to the stranger across the club. It's how a handful of humble words can give millions the inspiration to overcome. It's the genius of a simple chorus that can explain the hard truths you couldn't last time you saw her.