Just like the song I listen to when I am angry, I don’t really feel the need to turn on music on those very rare instances when I am sad so this is a very difficult one to answer. The best I can do is refer folks back to day 4, a song that makes me sad. I don’t know of this constitutes cheating or not, but it is the truth. I can’t really ever think of a song that I’ve turned on deliberately when feeling sad. And if I have done so, I imagine that I’ve done what I would most likely do in such cases: pick a long playlist and put it into “random” play.
Let the fates and pseudo random algorithms control what song I listen to when I am sad.