(Ken Burns opens the category for us.) On January 8, 2001 the series "Jazz" premiered with a look at this birthplace of jazz, the USA's most cosmopolitan city at the turn of the 20th century
[DOC] [TLE] JAZZ AND THE CULTURAL TRANSFORMATION OF AMERICA IN ... [PAR] transformation of American culture in the 1920s forced people into a new set of .... 
the Swing Era, in other words, A Song is Born posited jazz as a perfectly ... 
creation of a viable narrative history of twentieth century jazz music.