In the hip-hop community, it's about how real are you, or how strong can you be, and really my music just reflects me. If you can accept me, then you can accept my music.
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.
Sometimes my mother had difficulty communicating with me about certain topics.