I saw Reverend Shine Snake Oil Co. play at this dirty little blues bar in Copenhagen. The place was packed with people dancing against each other, singing along, and clapping to the beat. Claudius, the band's captivating frontman, had us eating out of his hand. When he held a note, we held our breath. When he called out to us, we shouted back. And when he commanded us to sweat for him, we made it drip from the walls.