ImpracticalDino: I don't often feel down for a long time and when I do, I just try to keep my thoughts together and let it pass. So no, there's no particular song I listen on those moments.
Anagnos: If I could choose when I finally wish to die, of course, but if it's absolute immortality without it ever ending, I surely wouldn't. I'm quite sure there will one day come a point where life is no longer worth it and there is a good chance that kind of life could be worse than whatever happens in death.