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.Curtis Harding says that soul music, and his music, speak for themselves. It’s self-evident on theAtlanta artist’s debut, Soul Power. The driving sound of his electrified Stratocaster, the foot-stomping backbeat and the lyrics swimming in reverb — with something this flourishing, it’s almost reductive to just dig around the roots.