A major work about the great saxophonist-and about the state of jazz. What was the essence of John Coltrane's achievement that makes him so prized forty years after his death? What was it about his improvising, his bands, his compositions, his place within his era of jazz that left so many musicians and listeners so powerfully drawn to him? What would a John Coltrane look like now-or are we looking for the wrong signs? The acclaimed jazz writer Ben...