Antiquities -- The dark ages -- The Renaissance -- The Beggar's Opera -- Comic operas -- The Black Crook -- Operettas -- Revues -- George M. Cohan -- The Princess musicals -- Show Boat -- Porgy and Bess -- Agnes De Mille and Oklahoma! -- Jerome Robbins and West Side Story -- Michael Bennett and A Chorus Line -- Directors and Choreographers -- The Black Musical -- The Rock Musical -- The English Musical -- The Off-Broadway Musical -- Classics, major and minor -- Bookwriters -- Lyrics -- Music -- Decline and Fall -- Into the Woods.