Louis Armstrong. "Satchmo." To millions of fans, he was just a great entertainer. But to jazz aficionados, he was one of the most important musicians of our times--not only a key figure in the history of jazz but a formative influence on all of 20th-century popular music. Set against the backdrop of New Orleans, Chicago, and New York during the "jazz age", Collier re-creates the saga of an old-fashioned black man making it in a white world. He...