What is the primary genre of "Daphne"?

The primary genre of "Daphne" is opera. This work, composed by Richard Strauss, exemplifies the characteristics of the operatic genre, which includes a narrative structure conveyed through both orchestral and vocal music. Operas typically feature arias, ensembles, and recitatives that develop characters and advance the plot, which aligns with the structure and purpose of "Daphne."

In contrast, an oratorio is a large-scale musical composition for orchestra, choir, and soloists, often with a religious theme, but it typically does not include the same dramatic elements or staging found in opera. A sonata is a musical form that often involves instrumental compositions with multiple movements but lacks the vocal and theatrical components characteristic of opera. Lastly, a symphony is a lengthy orchestral work usually in four movements, which focuses on instrumental music rather than the dramatic storytelling that defines operatic works like "Daphne." Thus, the defining features of "Daphne" clearly categorize it as an opera.