Which aspect of opera distinguishes it from other musical genres?

The distinguishing aspect of opera lies in its unique integration of singing and storytelling. Unlike other musical genres, where music may serve as a backdrop to lyrics or narrative, opera combines vocal performance with dramatic expression, creating a cohesive narrative through a blend of music, libretto (the text of the opera), and staging. In opera, the singers not only convey emotion through their voice but also through their actions and interactions with other characters, immersing the audience in both the music and the story being told.

This integration of elements allows operas to explore complex themes and emotions, engaging the audience on multiple levels. While other genres may incorporate storytelling—such as musical theater or certain forms of popular music—opera's distinctive approach involves a more formalized structure and often a broader orchestral accompaniment, making the combination of singing and narrative its defining characteristic.