Some novels take their cues from history; others, from the author’s own life. For her new novel Ceremonials, Katharine Coldiron opted for a very different muse: in this case, the Florence and the Machine album with the same title. The resulting work is an expansive and constantly-shifting piece of fiction, one in which desire and identity blur together in a world that feels both archetypal and realistic. I spoke with Coldiron about the genesis of her new book and the process of translating music into words.