Bush (photo: Patric Carver) “Gavin will be out shortly to sing like a man,” the Kickback lead vocalist Billy Yost called out to the crowd, “which is a real difference to what you’re hearing now.” Yost flashed a smile at the crowd, and cut into their third song of the night — pouring beautiful slog rock over the crowd — attracting listeners like a fisherman chumming the waters. Despite the self-effacing humor (or maybe because of it), Yost and company played a thrilling set which was a combination of fun and feedback. South Dakota natives that moved to Chicago with [...]