Daewhita

"Daewhita" is marching band music that is played for a king's procession or a military parade. The leader, called the deungchae, leads the band consisting of the yonggo, taepyeongso, nabal, jing, and bara. In some occasions, the janggu, piri, sogeum, and ulla can be added.
The nagak is a large seashell played as a horn and only produces a single tone.