Nowadays, if a studio assumes that his film is bad, there is always an executive that gets more nervous than usual and thinks that if they change the music, the film will become a masterpiece.
A lot of times songs are very much of a moment, that you just encapsulate. They come to you, you write them, you feel good that day, or bad that day.
If you were the only suspect in a senseless bloodbath, would you be standing the the horror section?