It's this remarkable contrast that constantly fascinates audiences around the globe: They see a young man standing or sitting on stage, while hearing him play the most staggering version of "Cannonball Rag". Brooks Robertson just doesn't need much more than two thumbs, eight fingers and six strings on a wooden box to carry his listeners away. Hailed by prominent exponents of his instrument like Nokie Edwards, Thom Bresh, John Jorgenson and Mason Williams, the young fingerstyle guitarist embod