This document provides an overview of the history and evolution of Western classical plays and opera from ancient times to the medieval period. It discusses the origins of theater in ancient Greek and Roman cultures, including important playwrights and theatrical forms such as tragedy, comedy, and satyr plays performed in Greek open-air theaters. Roman theater was influenced by Greek traditions. During the medieval era, minstrels performed in public spaces while churches began staging biblical plays that were later moved outside due to depictions of evil. The document traces the development of Western theatrical traditions over time.