Of all the styles of jazz to emerge in the twentieth century, none is more passionate, more exhilaratingly up-tempo, or more steeped in an outsider tradition than Gypsy Jazz. And there is no one more qualified to write about Gypsy Jazz than Michael Dregni, author of the acclaimed biography, Django. A vagabond music, Gypsy Jazz is played today in French Gypsy bars, Romany encampments, on religious pilgrimages--and increasingly on the world's...