1 definition by BlueAngel

Top Definition
Background vocals used in film, TV, audio dramas, and other sound productions to give depth to the scene. For instance, people chatting in the background at a restaurant, or the sound of children playing at the park. Basically, the vocal equivalent of extras on screen.
The studio hired extra actors to perform walla to make the mall scene more convincing.
by BlueAngel September 01, 2006

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