For a bluegrass purist, Punch Brothers must be a frustrating band. While most of PB's songs don't fit within a traditional bluegrass style, whenever they do decide to play a straight-up bluegrass folk tune, they totally knock it out of the park. This is the case with "Boll Weevil", the one truly bluegrass track from their album "The Phosphorescent Blues". The track adds to the eclecticism of an album that also includes transcriptions of Debussy and Scriabin and gives bluegras