What is national song?

A national song, also known as a national anthem, is a musical composition that symbolizes and represents a nation. It is typically played or sung during official events, such as flag-raising ceremonies, national holidays, and sporting events. National songs often express patriotic sentiments and celebrate the history, culture, and values of a country. They are typically adopted and designated as official through legislation or by tradition, and are a significant part of a nation's cultural and historical heritage.