Classical Hollywood cinema
The beginning of the sound era itself is ambiguously defined. To some, it began with "The Jazz Singer", which was released in 1927 and increased box-office profits for films, as sound was introduced to feature films. To others, the era began in 1929, when the silent age had definitively ended. Most Hollywood pictures from the late 1920s to 1960s adhered closely to a genre—Western, slapstick comedy, musical, animated cartoon, and biopic (biographical picture)—and the same creative teams often worked on films made by the same studio. For instance, Cedric Gibbons and Herbert Stothart always worked on MGM films; Alfred Newman worked at Twentieth Century Fox for twenty years; Cecil B. DeMille's films were almost all made at Paramount Pictures; and director Henry King's films were mostly made for Twentieth Century Fox. Similarly, actors were mostly contract players. Film historians and critics note that it took about a decade for films to adapt to sound and return to the level of artistic quality of the silents, which it did in the late 1930s.
Film score
Before the age of recorded sound in motion pictures, efforts were taken to provide suitable music for films, usually through the services of an in-house pianist or organist, and, in some cases, entire orchestras, typically given cue sheets as a guide. A pianist was present to perform at the Lumiere brothers' first film screening in 1895. In 1914, The Oz Film Manufacturing Company sent full-length scores by Louis F. Gottschalk for their films. Other examples of this include Victor Herbert's score in 1915 to "The Fall of a Nation" (a sequel to "The Birth of a Nation") and Camille Saint-Saëns' music for "The Assassination of the Duke of Guise" in 1908. It was preceded by Nathaniel D. Mann's score for "The Fairylogue and Radio-Plays" by four months, but that was a mixture of interrelated stage and film performance in the tradition of old magic lantern shows. Most accompaniments at this time, these examples notwithstanding, comprised pieces by famous composers, also including studies. These were often used to form catalogues of photoplay music, which had different subsections broken down by 'mood' and genre: dark, sad, suspense, action, chase, etc.