In 1927, the Harlem renaissance peaked and Duke Ellington’s orchestra became the house band for The Cotton Club. Fifty years later, 1977 gave rise to hip hop's innovators and seminal albums from the CBGB crowd. We talk to author and music journalist Tony Fletcher about his new book, All Hopped Up and Ready To Go: Music From the Streets of New York, 1927-77, a look at local neighborhoods that served as laboratories for some of the most influential music of the 20th Century.