On the premise that dialogue is the vehicle of cognition as well as competition or game, this study explored the relation-making of dialogic Gasa(가사). Relation-making is possible among the different subjects. And the dialogic works in this study perceive the aspect of things through the dialogue between ego and alter ego. The concrete aspects of relation-making through dialogue are as follows. 1. Coexistence of heterogeneous voices. This makes possible multilateral self-reflection by subject-separation. 2. Readjustment of boundary. Sometimes the boundary of two existences can fade away through dialogue. 3. Formation of meta-dialogue. The dialogue with the preceding text makes possible the consideration of meta-level. Relational cognition implies the educational importance because it makes one consider the situation in the various aspects. And dialogue is the representative discourse type of relation-making.