The charcoal work of Gwangnyeosan Mountain is a collection of the charcoal work of Aehwan, which was sung during the process of producing charcoal. Therefore, the sequence of development of the song shows the process of producing charcoal.

The period of producing charcoal is quite long. Therefore, the sound of charcoal work is mixed with songs of each genre. A ritual song was sung when performing a ritual, a play song when resting, and a labor song when working. Therefore, the song was sung individually when the participants worked together and individually when they were working together, and the most prominent characteristic of charcoal Ilsori is that the various styles of singing and various genres coexist together.