* To emphasize important moments or scenes. A sudden change in music or the addition of a dramatic drumbeat can help to draw the viewer's attention to a particular scene or moment. This is often done to create suspense, excitement, or humor.
* To help the story flow more smoothly. Music can help to fill in gaps between scenes and create a smooth transition between different parts of the program. This can be done by using music that fades in and out, or by using different musical cues to signal a change in scene.
* To create a more engaging experience for the viewer. Background music can help to keep the viewer engaged and focused on the program by providing an audio backdrop. This can be especially important in programs that do not have a lot of dialogue or action.
It is important to note that not all TV producers use drumming or irritating background music to achieve these effects. Some producers prefer to use music sparingly or not at all, in order to avoid distracting the viewer from the program's content.