An orchestra is defined as a large instrumental ensemble typical of classical music. An orchestra features bass, brass, strings, woodwinds, and percussions. In the list given above, the section that is not one of the four groups in the orchestral palette is the voices. The answer would be "voices".
Answer:
2
Explanation:
The music lasts about 40 minutes, and is divided into two parts. It has the subtitle "Pictures from Pagan Russia".
