This article is related to the recent use of a stone monument or glass with song lyrics engraved on it by local governments or public institutions and installed in tourist attractions such as parks and resorts. In this article, the trial court applied the comprehensive fair use jurisprudence to the act of using works prior to the introduction of Article 35-3 (fair use of works) of the old Copyright Act. It was examined whether it was appropriate to judge the use of all song lyrics as a fair use of the work because the purpose for the public interest was greater when the song monument was produced with the meaning of promoting public rest and commemorating song lyrics. As a result of examining this, it can be said that this case was the use of works by public institutions for the public interest before Article 35-3 was introduced into the Copyright Act. Therefore, rather than applying Article 35-3 to this case, expanding application/interpretation of Article 28 (Citation of published works) of the Act is a way to flexibly apply the principle of fair use. Under these conclusions, it was also reviewed whether the act of using the work conforms with fair practice within a justifiable range . Even if the purpose is to help citizens relax while notifying that there is a certain human or regional connection, it is difficult to believe that it is justified to install it in a place where anyone can go in and out at all times using all the lyrics of the song. In the form of using all song lyrics, the purpose of appreciation of the original work is used as it is, and it is used in a form that can substantially replace the sentimental demand of the original work. This article came to the conclusion that it is difficult to see it as a fair use.