Walla

Walla is the sound of background voices, the indistinct murmur of a crowd, restaurant, or gathering that fills a scene without any single line being intelligible. The name comes from the practice of performers repeating words so that the result reads as natural chatter rather than identifiable speech.

Recorded by groups of performers or assembled from libraries, walla establishes the sense that a space is populated and alive. It is layered carefully beneath the principal dialogue so that it supports the atmosphere without competing with the lines the audience needs to follow.^[1]