What prominent feature characterizes the music of "Peter and the Wolf"?

The music of "Peter and the Wolf" is characterized by the use of specific instruments that correspond to the various characters in the story. Each character is represented by a different musical instrument, allowing listeners to easily identify them throughout the narrative. For example, Peter is typically associated with the strings, the duck with the oboe, the bird with the flute, and the wolf with the French horns. This orchestration not only enhances the storytelling aspect of the piece but also provides a rich auditory experience, where the distinctive sounds of each instrument contribute to the overall characterization and expressiveness of the music.

In contrast, the other options do not accurately reflect the nature of "Peter and the Wolf." The work indeed has a strong narrative that is integral to its structure, it incorporates orchestration beyond just vocal elements, and it employs a diverse array of instruments rather than being limited to only strings.