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.
History of film
During late 1927, Warners released "The Jazz Singer", which was mostly silent but contained what is generally regarded as the first synchronized dialogue (and singing) in a feature film; but this process was actually accomplished first by Charles Taze Russell in 1914 with the lengthy film "The Photo-Drama of Creation". This drama consisted of picture slides and moving pictures synchronized with phonograph records of talks and music. The early sound-on-disc processes such as Vitaphone were soon superseded by sound-on-film methods like Fox Movietone, DeForest Phonofilm, and RCA Photophone. The trend convinced the largely reluctant industrialists that "talking pictures", or "talkies", were the future. A lot of attempts were made before the success of "The Jazz Singer", that can be seen in the List of film sound systems.