What key element distinguishes opera from other musical styles?

The key element that distinguishes opera from other musical styles is the integration of visual performance with music. Opera combines singing, orchestral music, acting, and sometimes dance to tell a story, creating a unique form of theatrical performance. This multi-faceted approach enhances the experience, as the emotional depth of the music is complemented by the visual aspects of staging, costumes, and acting.

In opera, the narrative is advanced through both the music and the performance, making it different from genres that might focus solely on the audio experience or lack the theatrical element altogether. This integration is what allows opera to convey complex emotions and narratives in a way that is typically not found in other musical styles.