"United Republic", also known by its incipit as "Repeat, O World, my song", is the national anthem of Yemen. It was written by Abdullah Noman and composed by Ayoob Tarish. It was formerly used as the national anthem of South Yemen but was adopted by Yemen when the country was unified in 1990.

South Yemen, officially the People's Democratic Republic of Yemen, officially abbreviated to Democratic Yemen, was a state that existed from 1967 to 1990 as the only communist state in the Middle East and the Arab world. It was made up of the southern and eastern governorates of the present-day Republic of Yemen, including the island of Socotra. It was bordered by North Yemen to the North-West, Saudi Arabia to the North, and Oman to the East.