Wipes, like fades to black and dissolves, may indicate a change in time or place. The style of using wipes as transitions was more common in comedies of the '40s than it is today. The sound track, which is often music and dialogue, helps the shots flow smoothly into one entity, but even more significantly, the sound track often transcends the impact of the visual elements, leading the viewer to experience the film or video on an emotional level. Music Many videos and most commercials starts with music and this music fades up. The same music may continue throughout, or it may cut or dissolve to another piece of music.
Commercials use rock 'n roll, classical, country, opera and every other type of music.
It may be purely instrumental or have lyrics sung by a vocalist. Some scriptwriters specify exactly which song is to be edited into their commercial. Different types of music, accompanying the same visuals, can dramatically change the mood and impact. Many of the music selections used in commercials have a lively beat which helps drive the visuals and makes the film more compelling. Usually you don't see the narrator who may be male, female, young or old.