No song. The sound of silence is my favorite music.
When I do listen to music, it is when I go to the gym. And then I want happy music with a dancing rhythm that makes me work out with zeal. Otherwise, I prefer silence.
When I was younger, and was sad and suffering, I used to listen to sad songs and cry my soul out. Not anymore. Keeping myself deliberately in that kind of energy is of no use whatsoever, other than damaging my health but not enough to kill me.
I am still sad, and in a lot of emotional pain. Why add more to it? Joy is too far fetched, but I am looking for peace.