American opera is a genre of opera that originated in the United States, reflecting the country's diverse cultural influences. It encompasses a wide range of styles and themes, often incorporating elements of jazz, blues, and folk music. Notable composers include George Gershwin, whose work "Porgy and Bess" is a significant example of American opera. The development of American opera began in the early 20th century, with works that addressed contemporary social issues and American life. Institutions like the Metropolitan Opera and festivals such as the Santa Fe Opera have played crucial roles in promoting and producing American operatic works, contributing to the genre's growth and recognition.