“We recorded that album in three hours,” Richter told me one drizzly afternoon, in a booth at Café Chelsea, in Manhattan. Slender and tall, with cropped hair and wearing a crisp black button-down, he went on, “When I’m working on something, I’m, like, ‘Is anyone going to hear this?’ I sort of don’t expect anything. I’m just trying to put notes in the right places.” In part because of “Daylight,” Richter became the best-selling living artist on the classical label Deutsche Grammophon.