Voice over is a form of NARRATION where a voice is recorded and used to provide a commentary or description for a video, film, television show, or other audio-visual production. It is often used to provide a more personal touch to the production, as well as to provide a more natural sounding dialogue than what is possible with a scripted dialogue. The term 'voice over' is derived from the phrase 'voice-over NARRATION, ' which was first used in the early days of radio broadcasting.