In the popular music, composers, arrangers and lyric writers, who create music, are copyright holders, and singers, choruses that assist singing and instrumental players of various instruments such as piano, guitar, base and drum are owners of neighboring copyright as performers. The copyright holders are those with high level of contribution, but performers sometimes make high level of contribution to creation by adding considerable creative elements to musical literary works. This case happens when experienced performers s professional playing abilities are projected into a work during recording process after most parts of the musical literary work are first created. Of course, if a work that is recorded as it is created, or a work is completed under the copyright holder s full control and supervision without reflection of performers expression, it is undeniable that the copyright of the musical literary work goes to the copyright holder. However, there are a lot of cases that performers suggest creative opinions to a copyright holder and the copyright holder accept them during the process recording of an album(sound source), so it is necessary to judge whether the copyright of the musical literary work that went through the process should be held only by the copyright holder. Therefore, this study is intended to find out what creative elements performers contribute to musical literary works during the process of creating or recording musical literary works, and to analyze the copyright.