Here is the book jazz lovers have eagerly awaited, the second volume of Gunther Schuller's monumental The History of Jazz. When the first volume, Early Jazz, appeared two decades ago, it immediately established itself as one of the seminal works on American music. Nat Hentoff called it "a remarkable breakthrough in musical analysis of jazz," and Frank Conroy, in The New York Times Book Review, praised it as "definitive.... A remarkable book by any...