Which composition resulted in an audience riot during its premiere performance?

The shape of Irish or Celtic high crosses, made of stone, is identifiable by which form?

A. Four arms of equal length B. An additional top slanting bar C. A circle intersecting the cross arms D. A swastika symbolizing the four directions

Discuss the differences between motivated sounds and environmental sounds. Could the same sound effect be a motivated sound in one context, and an environmental sound in another context? For instance, consider contexts that might make a gunshot, a door slamming, or a car crunching on gravel a motivated sound. Then discuss a context in which they might be environmental sounds.

What will be an ideal response?