Jongmyo
The Jongmyo-Daejae, or "Royal Shrine Ritual" in English, was the most important rite performed at the shrine.  During the Joseon Dynasty, it was performed five times each year.  During the Japanese occupation of Korea (1910-1945), it was not performed because the Japanese did not allow it.  Since 1969, the Royal Family Association has performed the Jongmyo-Daejae once each year.  The Jongmyo-Daejae itself and the music used in the Jongmyo-Daejae were both declared Intangible Cultural Heritage by UNESCO in 2001.