Explanation:

It's important because it includes court music, folk music, used in shamanistic and Buddhist traditions.

The music of Korea refers to music from the Korean peninsula ranging from prehistoric times to the division of Korea into South and North in 1945. It includes court music, folk music, poetic songs, and religious music used in shamanistic and Buddhist traditions.[1] Together, traditional Korean music is referred to as gugak (Hangul: 국악), which literally means "national music."[2]