The artistic representation may be exaggerated?
The answer is "<span>libretto".
</span><span>The text, or book, of a musical dramatic work is called the libretto.
</span>Libretto is derived<span> from </span>Italian and is<span> diminutive of the word </span>libro<span> which actually means "Book". The person who writes librettos is called "</span>librettist".
Film soundtracks will speed up, edit, and rearrange music and songs as to fit the scene that the music take place. This way the song isn't too long, and fits the mood.
Hope this helps!