Why, oh why, again with the waking up at 2 a.m.? Sigh. I lay there in the pitch-dark, utterly awake, when I heard a sound that reminded me of a long-haul trailer shifting as it goes up a big hill. A low hum, it shifted pitch and faded in and out. I realized it was the wind running through the contours of the many arms and hollows of our little glacier-carved mountain—the hill was singing.