Dipping into the Meetinghouse in Amherst, MA, on a multi-city tour, reedsman Peter Brötzmann and drummer Han Bennink paired up for a performance that projected a dynamic rarely experienced in the music. A hard-edged European mode of improvisation overcame the acoustically alive room. Tenacity and intensity go hand in hand. Even though such descriptive nouns might imply a network of rules, those rules might also include flexibility fraught with determination and direction. For Brötzmann, the r