By DCist contributor Graham Hough-Cornwell When opener Chad VanGaalen first walked out on stage to prepare his one-man band setup, things looked less than promising. Donning one of those white ninja headbands tied around his head, he arranged a bass drum, hi-hat, snare, and drum machine around a short stool and his hollow body electric. I typically run from something like this, jaded by previous unfortunate experiences with openers like VanGaalen’s fellow Canadian New Buffalo…