Besides its value for personal enjoyment, music was an essential part of court ritual and public ceremonies. Some notion of its importance is shown by the fact that the Bureau of Music (Gagakuryô) was by far the most important aspect of the Ministry of Civil Affairs in Murasaki's day. This Bureau selected and trained a cadre of singing, dancing, and instrumental music teachers.
This court music of Heian Japan, called gagaku, can still be heard today, amazingly little changed from its 11th-century form. Important Shinto shrines maintain gagaku orchestras, as does the music department of the Imperial Palace in Tokyo. The stylized, heavily costumed dance that sometimes accompanies this music is known as bugaku. The performance of a brief bugaku piece is very popular for modern Shrine weddings.
If you click on the instruments, you will hear the short piece "Banshikichô netori." This is the prelude for the work Seigaiha (Waves of the Blue Ocean), a popular piece mentioned in The Tale of Genji. In the chapter "An Autumn Excursion" Genji himself dances this piece along with his best friend, Tô no Chûjô.