This is the centenary year of the birth of Langston Hughes, the first African-American to live by his writing and the first to recognise the potency and beauty of black popular forms. British poet Fred D'Aguiar looks at Hughes's life and work, hearing from his biographer Arnold Rampersad, from veteran jazz writer Dan Morgenstern, from Bonnie Greer, and from Toure, short-story writer and editor of Rolling Stone. Poems, interviews, music, archive of Hughes himself and the sounds of Harlem flow like song, then cut from one idea to another - like jaZZ.