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In American radio, film, television, and video games, walla is a sound effect imitating the murmur of a crowd in the background.  A group of actors brought together in the post-production stage of film production to create this murmur is known as a wallagroup.

  • Writer's pictureMARK RICCHE

THE FIVE KEY YEARS OF CINEMA HISTORY… AND THE ADDITIONAL YEARS WE SHOULD BE ADDING