Book excerpt: Opera in the first half of the eighteenth century saw the rise of the memorable composer and the memorable work. Recent research on this period has been especially fruitful, showing renewed interest in how opera operated within its local cultures, what audience members felt was at stake in opera performances, who the people-composers and performers-were who made opera possible. The essays for this volume capture the principal themes of current research: the "idea" of opera, opera criticism, the people of opera, and the emerging technologies of opera.