Let's say music is needed for only 43 seconds of film. You have to score it so it is an entity, so it won't bother anyone when it ends so quickly. Or if a song runs 2 minutes and 45 seconds, but the titles run a minute longer, you have to arrange that song so it doesn't get repetitious.
“When I got hoarse, the manager would say, 'Drink this. Joplin used to drink this,' and I used to say, 'Joplin? Joplin's dead.”
“Understanding that yes, we are committing more resources than we thought we might be in protecting our homeland and prosecuting a war and so it's understandable that we would be going through a period of deficits.”