, tell it, the summer festival is a modest affair. As he prepared recently for Mavericks 97th season, on the theme of a Tour de France, Mr. Platt sought to play down any suggestion... said, is to have a more intensive summer festival in which a handful of great masters exist in conversation. Modesty aside, however, that conversation could yield its share... of insights into the Gallic musical psyche. The festival, which runs from July 1 to Sept. 16, promises an array of top-flight classical and jazz musicians, among them a few with bona...