All genres of music have one common ground and that is that they want to embody a certain emotion and deliver it in a way that makes the listener connect with the feelings portrayed in a song. Emotions are not binary however, when we are faced with a troubling situation, there are a range of emotions that we will feel as we process and come to terms with the reality of it.
For example, if someone betrayed your trust, at first you will feel vulnerable and hurt, you will think about it and maybe even talk to some people for advice and that sadness can transform to anger.
After letting that anger animate your actions you realize that you are better off without that person and be mostly happy but may still struggle with the void left by the persons absence. Different elements of different music capture these emotions and transitional periods and I let my creativity decide which to pick and chose.