Sometimes you think you’ll sleep as soon as your head hits the pillow. Your head is heavy; your mind is numb. Then this inexplicable buzz comes through and the veil of stupor suddenly turns into a party hat. At times like these, the brain needs a balm. For me, it’s music. I have a number of songs that do the trick, but one of my favorites is Scott Walker’s “Farmer in the City” from Tilt. It’s an unsettling, disarming yet beautiful track. There’s something perplexingly soothing hearing Walker sing out “Do I hear 21, 21, 21? I’ll give you 21, 21, 21.” I have no idea what he’s singing about. But in the space between night and the wee hours of the morning, it sounds just right.