Which term refers to a group that provides background voices for crowd scenes?

• A. Lavalier Mic
• B. Jam synch
• C. Group Walla
• D. Head pop

Answer: (C)

Group Walla refers to a group of performers who provide the background voices for crowd or ambient scenes. In film sound work, you don’t want a single person talking in the background; you want a murmur of many voices overlapping—that’s what a walla group delivers. They record lines or generic chatter that’s then layered under the scene to create realistic crowd ambience without pulling focus from the main dialogue. This technique lets the dialogue sit cleanly in the mix while still selling the sense of a busy environment.

Lavalier mic is a small lapel microphone used to capture a specific performer’s spoken lines, not to create crowd sound. Jam sync isn’t a standard term for crowd background vocals, and head pop isn’t a recognized term for this purpose either. So Group Walla is the best fit for describing a background-voices group in crowd scenes.