Initially, "Aegukga" was sung to the tune of the Scottish folk song "Auld Lang Syne", introduced to Korea by western missionaries. The Provisional Korean Government (1919–1945) in Shanghai, China, adopted it as their national anthem. At a ceremony celebrating the founding of South Korea on 15 August 1948, the Scottish tune was finally replaced by the Finale of "Korea Fantasia", which Ahn Eak-tai had composed in 1936, though its usage with it had been done unofficially for a few years before then. The new "Aegukga" was later adopted by the Presidential Decree of 1948 by the then South Korean President Syngman Rhee.