Final answer:
The national anthem is usually played during formal events to evoke national pride and honor the nation. Its unusual play may signify an important event or ceremony. Historical and contemporary contexts highlight its significance in times of war, unity, and transformation.
Step-by-step explanation:
It is unusual to hear the national anthem played outside of formal events or national ceremonies because it is a symbol of the country's heritage, patriotism, and history. Typically, the national anthem is played to evoke national pride during significant events such as sports games, military ceremonies, and national holidays. Furthermore, when the national anthem is played, it often signifies the honoring of the nation and the remembrance of the sacrifices made by its people. In historical texts, the national anthem's playing is associated with times of war, such as in Mark Twain's “The War Prayer,” where mentions of patriotism and encouragement of troops are coupled with reverence to the flag and anthem.
Additionally, the national anthem can symbolize unity and transformation, as seen with South Africa's unique anthem combining multiple languages and melodies, reflecting the country's diverse fabric and journey towards unity.