National anthem
A national anthem is a country's national song; the people of a nation sing their national anthem to remember and respect their country. By the 18th century, most countries had a national anthem and new countries chose a national anthem when they became independent. Some monarchies have a royal anthem for their monarch.
National Anthem Media
Holographic copy of 1847 of Il Canto degli Italiani, the Italian national anthem since 1946
Early version of the "Wilhelmus" as preserved in a manuscript of 1617 (Brussels, Royal Library, MS 15662, fol. 37v–38r)
Star-Spangled Banner with the American flag (ca. 1940s). Anthems used during sign-on and sign-off sequences have become less common due to the increasing prevalence of 24-hour-a-day, seven-day-a-week broadcasting.