There was only one prize-winning teenager with gumption enough to say, thanks, but no thanks to Roy Acuff. Only one son of Kentucky both finding a light of inspiration from Bill Monroe and his Blue Grass Boys and catching a fire from Bob Marley and The Wailers. Only one progressive hippie allying with like-minded conspirators, rolling out the New Grass revolution, and then leaving the genres torch-bearing band behind as it reached its commercial peak.There is only one consensus pick of peers and...