Celtic music did a sneak attack on me some years ago when I had a workshop where I'd tinker on into the evening. One night, I put on NPR just for company at a time when they were broadcasting a regular weekly show featuring exclusively Celtic music. I was stunned to discover, not only that my notion of the Celtic sound was way off base, but that some incredible music was being composed and performed. From that point forward, I never missed a show. Hey, Bono is a Celt, right?