Christoph Willibald Gluck (1714–1787) is celebrated as a transformative composer who redefined opera in the Classical period, bridging the gap between Baroque traditions and more expressive, narrative-driven music. Known for his "reform operas," Gluck aimed to simplify opera's excessive ornamentation, emphasizing emotion, plot coherence, and accessibility for audiences. Here are five of his best compositions, showcasing his legacy and innovations in the world of opera.