Take a stroll through the campground at just about any festival -- folk, bluegrass, old-time, Celtic, or any mixture -- and at some point it's a good bet that a haunting refrain will drift into consciousness from a nearby jam or song circle: "High on a mountain, standing all alone, Wond'ring where the years of my life have gone" To some, it's a timeless line from a song that must certainly be at least a hundred or more years old. To others, it speaks of the new age mysticism and introspection of the latter-day singer/songwriter. The truth is somewhere between. "High on a Mount...