The term "soundtrack" in terms of technology refers to the narrow strip along the side of a film containing the optical sound coding. However, in more common terms as applied in the recent years, a soundtrack happens to refer to the audio component of movies, television programs, video games, or even books. It is also to be noted, that a soundtrack covers not only music, but also the various aspects of sound effects, dialogue, and voiceovers. In short, its chief obligation is to serve so as to enhance the scene or frame that visual images cannot. In addition, as a product of the spectacular technological advancement of the recent years you can also buy the soundtrack of a movie or television show in the form of a CD recording. It is true that for the sake of a movie the music is composed and recorded especially for a movie or show. But there are also instances when songs already existing are used. Expect a soundtrack album to contain not only whole streams of songs, but also segments of the score and even thematic music effects. In this regard, the best-selling soundtrack to date is that of the movie, "The Bodyguard." It carries the lead single "I Will Always Love You" performed by Whitney Houston.
However, it was not till the 1980's that the video game labels started to compose music specifically for their games. Thus this period can be regarded as a milestone in the realm of soundtracks. Indeed there are some sound effects that are still universally used for action in almost any game, but music at the moment sets different games apart from each other. For instance, to name a few, among them Koji Kondo, the noted composer for Nintendo games, happens to be one of the pioneers of video game soundtracks. Back in his day, these soundtracks just came in midi files while now the video game soundtracks are available as high-quality CDs.