The mournful sound of Marianne Faithfull’s voice is perfect for a day so dark that at 9 a.m. it felt like midnight and the rain has made sinkholes in the yard outside. Sleep, incidentally, is what one should do on a day such as this. Some of us have to get up and ponder the cosmos, alas. Still, the mood is set. Let your mournful spirit guide take you on an existential walkabout.