They help the actor eliminate stage fright and help in preparedness.
Answer:
Art can increase their political power and superiority; art can show the world a factual event, whether it be negative or positive; art can convey a message for social change; art can influence social change, either positively or negatively, art can spread an incorrect, but "preferred" history of an event in order to change people's perspective.
Explanation:
Selmer Eb contra-alto mouthpiece
