My great-grandmother always used to say, "Life is a train. People get on. People get off." And it just keeps going. Watching Rostam's Tiny Desk performance, it's easy to imagine you're on that life-train, traveling around and around, catching glimpses of instruments and faces as they pass by, before coming back where you started. It's a clever, if sometimes dizzying nod to the overarching themes of Rostam's Changephobia, a collection of songs that simultaneously look to the past and the future.