When Dave Rawlings hits his stride, the genius of his improvisation seems to stop time. All other distractions fade away and one can focus on his confident, driving guitar playing that is both discrete in melody and fluid within the larger harmony. Mr. Rawling’s is like a chess Grandmaster, able to play 20 moves ahead.  This is an incredible strength because as you begin to realize the beauty of what he has just played – a reward to those listening closely – Mr.