Playing music is the best thing in the world. It makes show business almost bearable.
Evening is a time of real experimentation. You never want to look the same way.
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.

