"The art of losing isn't hard to master," writes poet Elizabeth Bishop. What kinds of questions, problems, and pleasures do we encounter when we attempt to present losses that range in scale from a key to a country? Beginning in ancient Greece and ending in the twenty-first century, we engage with poets and prose writers who strive to compose their losses, who work to give shape to absences of various kinds. The essays we write interweave our own losses with those described in the texts we read together. Authors include Milton, Wordsworth, Tennyson, Hardy, Hughes, Rukeyser, Clifton, Howe, Carson, Hirsch, and others.