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.
The Sound of Music (film)
The film has been released on VHS, LaserDisc, and DVD numerous times. The first DVD version was released on August 29, 2000 to commemorate the 35th anniversary of the film's release. The film is often included in box sets with other Rodgers & Hammerstein film adaptations. A 40th anniversary DVD, with "making of" documentaries and special features, was released on November 15, 2005. The film made its debut issue on Blu-ray Disc on November 2, 2010, for its 45th anniversary. For the Blu-ray release, the original 70 mm negatives were rescanned at 8K resolution, then restored and remastered at 4K resolution for the transfer to Blu-ray, giving the most detailed copy of the film seen thus far. On March 10, 2015, Fox Home Entertainment released "The Sound of Music 50th Anniversary Ultimate Collector's Edition"—a five-disc set featuring thirteen hours of bonus features, including a new documentary, "The Sound of a City: Julie Andrews Returns to Salzburg". A March 2015 episode of ABC's 20/20 entitled "The Untold Story of the Sound of Music" featured a preview of the documentary and interviews by Diane Sawyer.