Wikipedia
The sceneggiata (pl. sceneggiate) or sceneggiata napoletana is a form of musical drama typical of Naples. Beginning as a form of musical theatre after World War I, it was also adapted for cinema; sceneggiata films became especially popular in the 1970s, and contributed to the genre becoming more widely known outside Naples.
The sceneggiata can be roughly described as a "musical soap opera", where action and dialogue are interspersed with Neapolitan songs. Plots revolve around melodramatic themes drawing from the Neapolitan culture and tradition, including passion, jealousy, betrayal, personal deceit and treachery, honor, vengeance, and life in the world of petty crime. Songs and dialogue were originally in Neapolitan dialect, although, especially in filmic production, Italian has sometimes been preferred, to reach a larger audience.
Outside Italy, sceneggiata is mostly known in areas populated by Italian immigrants. Besides Naples, the second homeland of sceneggiata is probably Little Italy in New York City.